NEC 2017, NFPA 70: NATIONAL ELECTRICAL CODE
The largest size conductor permitted within a concrete cellular floor raceway is _______.
1/0 AWG (2017 NEC: 372.20)
Where installing 500 kcml AWG copper ungrounded service entrance conductors, the minimum size copper grounding electrode conductor shall be not less than a/an _______.
1/0 AWG (2017 NEC: Table 250.66)
A protective plate is required for a 10-2 NM-B that has been placed in a wood stud. This plate shall have a minimum thickness of _______.
1/16 in (2017 NEC: 300.4(A)(1))
A recessed luminaire, that is not identified for contact with insulation, shall have all recessed parts spaced not less than _______ from combustible material.
1/2 in (2017 NEC: 410.116(A)(1))
Where metallic plugs are used with nonmetallic enclosures, these metallic plugs shall be recessed at least _______ from the outer surface of the enclosure.
1/4 in (2017 NEC: 110.12(A))
In walls of concrete, the front edge of the cabinet shall be set back of the finished surface not more than _______.
1/4 in (2017 NEC: 312.3)
A 12-2 NM-B cable's sheathing shall extend at least _______ inside a metal box and beyond any clamp within the metal box.
1/4 in (2017 NEC: 314.17(B) & (C))
Where used as a fastening means, nails may be permitted to pass through the interior of the box within _______ of the back or ends of the enclosure.
1/4 in (2017 NEC: 314.23(B)(1))
The branch-circuit overcurrent device shall be permitted to serve as the disconnecting means for stationary motors of _______.
1/8 hp (2017 NEC: 430.109(B))
Drainage openings not smaller than _______ and not larger than _______ in diameter shall be permitted to be installed in the field in boxes listed for use in damp or wet locations.
1/8 in, 1/4 in (2017 NEC: 314.15)
If the ungrounded supply conductors are larger than 1750 kcmil aluminum, the bonding jumper shall have an area not less than _______ of the area of the largest ungrounded supply conductor for parallel supply conductors.
12 1/2 percent (2017 NEC: Table 250.102(C)(1) Note: 1)
For DC circuits operating at less than 50 volts, the minimum size copper conductor shall NOT be smaller than a/an _______.
12 AWG (2017 NEC: 720.4)
At a mobile home, the network-powered broadband communications cable grounding terminal and primary protector grounding terminal shall be bonded together with a copper bonding conductor not smaller than _______.
12 AWG (2017 NEC: 830.106(B))
Receptacles, and cord connectors, shall be rated not less than _______.
15 amperes, 125 volts, or 15 amperes, 250 volts (2017 NEC: 406.3(B))
For outdoor installations, the maximum length of a cord, that is protected by a ground-fault circuit interrupter and serves a hot tub, shall not exceed _______.
15 ft (2017 NEC: 680.42(A)(2))
Service-entrance cables that are not approved for mounting in contact with a building shall be mounted on insulating supports installed at intervals not exceeding _______ and in a manner that maintains a clearance of not less than _______ from the surface over which they pass.
15 in, 2 in (2017 NEC: 230.51(B))
The minimum internal depth of an outlet box that is supplied by 14 AWG conductors, and encloses devices, is _______.
15/16 in (2017 NEC: 314.24(B)(5))
Class 2 signaling cables shall have a voltage rating of not less than _______ volts.
150 (2017 NEC: 725.179(G))
In each dwelling unit, the load for each 2-wire laundry branch circuit shall be calculated at ______.
1500 volt-amperes (2017 NEC: 220.52(B))
What is the minimum size 75°C (167°F) RHW copper conductor permitted in a raceway feeding an overhead crane's hoisting motor?
16 AWG (2017 NEC: Table 610.14(A))
Heat cables shall be secured at intervals not exceeding _______ or at intervals not exceeding _______ for cables identified for such use.
16 in, 6 ft (2017 NEC: 424.41(F))
What is a mobile home park's electrical wiring systems calculated at?
16,000 volt-amperes for each mobile home lot, or the largest typical mobile home that the lot will accept (2017 NEC: 550.31(1) - (2))
In amperes, the full-load current of a three-phase AC 208 volt 5 hp motor is _______.
16.7 amperes (2017 NEC: Table 430.250)
The temperature provisions for a 1/0 AWG copper conductor, used for circuits rated over 100 amperes, shall be _______.
167 degrees F (2017 NEC: 110.14(C)(1)(b)(1))
A motor has a full-load current of 8 amperes. This motor's thermal protector rating is _______.
170% (2017 NEC: 430.32(A)(2))
Excluding exceptions, for overhead spans of open conductors not over 1000 volts, nominal, the minimum clearance from an operable window shall not be less than _______.
3 ft (2017 NEC: 225.19(D)(1))
Type RMC shall be securely fastened within _______ of each outlet box.
3 ft (2017 NEC: 344.30(A)(1))
Nonmetallic auxiliary gutters shall be supported at intervals not to exceed _______ and at each end or joint.
3 ft (2017 NEC: 366.30(B))
The minimum distance that a suspended ceiling-paddle fan is permitted to be mounted horizontally from a bathtub is _______.
3 ft (2017 NEC: 410.10(D))
The cord for a built-in dishwasher shall not be less than ______ measured from the face of the attachment plug to the plane of the rear of the appliance.
3 ft (2017 NEC: 422.16(B)(2)(3))
Extra-hard usage flexible cords, not longer than _______, are permitted to be used for instrumentation in a Class I Division 1 location.
3 ft (2017 NEC: 501.105(B)(6)(3))
For other than storable pools, the maximum length of a flexible cord shall not exceed _______.
3 ft (2017 NEC: 680.8(A))
An electrical vault is required for electrical equipment over 1,000 volts nominal. The minimum fire rating of this vault shall be ______.
3 hours (2017 NEC: 110.31(A)(1))
Unless the Iuminaire is identified as Type IC for insulation contact, thermal insulation shall not be installed within _______ of the recessed Iuminaire's enclosure.
3 in (2017 NEC: 410.116(B))
A continuous load is when the maximum current is expected to continue for _______.
3 or more hours (2017 NEC: 100. Definitions)
The attachment plug cap for a mobile home shall be a/an _______ and intended to be used with 50-amperes.
3-pole, 4-wire, grounding type, rated 50 amperes, 125/250 volts (2017 NEC: 550.10(C))
For electrical equipment that is 3-phase 120/240-volts, the minimum width of the working space in front of the equipment shall be not less than _______.
30 inches with a hinged panel of at least 90 degrees (2017 NEC: 110.26(A)(2))
Class 1 power-limited circuits shall be supplied from a source that has a rated output of not more than _______.
30 volts and 1000 volt-amperes (2017 NEC: 725.41(A))
For permanently connected appliances rated at NOT over _______, the branch-circuit over-current device shall be permitted to serve as the disconnecting means.
300 volt-amperes or 1/8 hp (2017 NEC: 422.31(A))
Excluding exceptions, secondary circuits of current instrument transformers shall be grounded where the primary windings are connected to circuits of _______.
300 volts or more to ground (2017 NEC: 250.170)
Infrared heating lamps rated at _______ shall be permitted with lampholders of the medium-base type.
300 watts (2017 NEC: 422.48(A))
Screw shell lampholders shall not be used with infrared lamps rated over _______.
300 watts (2017 NEC: 422.48(B))
Omitting exceptions, the maximum ampacity for a branch circuit that supplies power to a pilot light shall not exceed _______.
4 (2017 NEC: 408.52)
Three four-foot single lighting tracks are attached together on the ceiling of a bedroom. The minimum required fasteners is/are _______.
4 (2017 NEC: 410.154)
Four lead-in conductors are used for an outdoor antenna. How many antenna discharge units are required?
4 (2017 NEC: 810.20(A))
Nonmetallic-sheathed cable shall be supported at intervals not exceeding _______ and within _______ of every cable entry into an outlet box.
4 1/2 ft, 12 in (2017 NEC: 334.30)
The minimum size copper conductor that is used for a concrete-encased electrode is _______.
4 AWG (2017 NEC: 250.52(A)(3)(2))
An insulated circuit conductor is contained within a raceway. The conductor exits the raceway and enters a cabinet. If this conductor is a/an _______ or larger, it is to be protected by an identified fitting providing a smoothly rounded insulating surface.
4 AWG (2017 NEC: 300.4(G))
The minimum size copper grounded conductor for a 240 volt AC system that consists of 3/0 AWG ungrounded copper service conductors is a/an _______.
4 AWG (2017 NEC: Table 250.102(C)(1))
Omitting exceptions, the concrete floor for a transformer, rated over 35,000 volts, shall be at least _______ thick.
4 in (2017 NEC: 450.42)
If other than _______ pounds, boxes used at luminaire outlets in a vertical surface shall be identified and marked on the interior of the box to indicate the maximum weight of the luminaire that is permitted to be supported by the box.
50 (2017 NEC: 314.27(A)(1))
The maximum ampacity for a lighting circuit shall not exceed _______.
50 amperes (2017 NEC: 210.23(D))
Excluding exceptions, the ampacity of a power-supply cord that services a mobile home is rated at _______.
50 amperes (2017 NEC: 550.10(A))
The ampere rating of a receptacle that has been installed on a 50 ampere circuit is _______.
50 amperes (2017 NEC: Table 210.21(B)(3))
An electrical panelboard has a width of six feet. The minimum width of the working space in front of the equipment shall be not less than _______.
6 ft (2017 NEC: 110.26(A)(2))
Receptacles shall be installed such that no point measured horizontally along the floor line of any wall space is more than _______ from a receptacle outlet.
6 ft (2017 NEC: 210.52(A)(1))
Where buildings exceed 50 feet in height, the minimum clearance for fire ladders from overhead conductors shall be arranged so that there is a clear space width of _______ adjacent to the buildings.
6 ft (2017 NEC: 225.19(E))
Omitting exceptions, if installing an equipment bonding jumper on the outside of a raceway, this equipment bonding jumper's maximum length shall not exceed _______.
6 ft (2017 NEC: 250.102(E)(2))
If multiple grounding electrode rods are required, they shall not be less than _______ apart.
6 ft (2017 NEC: 250.53(A)(3) & 250.53(B))
Type AC is to be protected within _______ of a scuttle hole
6 ft (2017 NEC: 320.23(A))
Type MC cables shall be secured at intervals not exceeding _______.
6 ft (2017 NEC: 330.30(B))
Type MC cable shall be permitted unsupported when not more than _______ in length from the last point of cable support to the point of connection to luminaires.
6 ft (2017 NEC: 330.30(D)(2))
Omitting exceptions, Type LFNC is not permitted in lengths exceeding _______.
6 ft (2017 NEC: 356.12(3))
Receptacles that provide power for water-pump motors shall be located at least _______ from the inside walls of the pool.
6 ft (2017 NEC: 680.22(A)(2))
Excluding exceptions, the center grip of the operating handle of a circuit breaker, when in its highest position, shall not exceed _______ above the working platform.
6 ft 7 in (2017 NEC: 240.24(A))
At least _______ of free conductor, measured from the point in the box where it emerges from its cable sheath, shall be left at each outlet point for the connection of luminaires.
6 in (2017 NEC: 300.14)
Neon secondary conductor(s) shall be supported not more than _______ from the electrode connection to the tubing.
6 in (2017 NEC: 600.42(D))
Omitting exceptions, the work space in front of a panelboard shall be clear and extend from the floor to a height of at least _______.
6.5 ft (2017 NEC: 110.26(A)(3))
To deter access by unqualified personnel, a fence is to be placed around an electrical enclosure over 1,000 volts nominal. The minimum height of this fence shall be ______.
7 ft (2017 NEC: 110.31)
Type AC shall be protected by guard strips that are at least as high as the cable if within _______ of the floor or floor joists across the face of rafters or studding.
7 ft (2017 NEC: 320.23(A))
An area where ignitable concentrations of combustible liquids above their flash points may exist frequently because of either repair or maintenance operations is a/an _______.
Class I, Division 1 (2017 NEC: 500.5(B)(1)(2))
A snap switch is rated at 20 amperes. It is directly connected to aluminum conductors. The snap switch is to be listed and marked _______.
CO/ALR (2017 NEC: 404.14(C) & 406.3(C))
Accessible, as applied to wiring methods, is BEST defined as _______.
Capable of being exposed without damaging the building finish (2017 NEC: 100. Definitions)
An aircraft's hangar floor area shall comply with the requirements for _______ locations.
Class I, Division 1 (2017 NEC: 513.8(A))
A location where, during processing, easily ignitable fibers/flyings are handled, manufactured, or used, is a/an _______.
Class III, Division 1 (2017 NEC: 500.5(D)(1))
For other than motors built for low speeds, high torques and multispeed motors, what shall be used to determine the ampacity of conductors?
Code (2017 NEC: 430.6(A)(1))
Where independent support wires are used for the support of fixtures in fire-rated assemblies, these wires shall be distinguishable by ______________.
Color Tagging Effective means from those that are part of the fire-rated design 2017 NEC: 300.11(B)(1)
A hickey is present within a metal box. A single volume allowance shall be made for this fitting based on the _______.
Largest conductor present (2017 NEC: 314.16(B)(3))
A system that is intended to automatically supply power to selected loads (other than those classed as emergency systems) in the event of failure of the normal source is referred to as a/an _______.
Legally required standby system (2017 NEC: 701.2 Definition)
Where equipment rated 800 amperes or more contains overcurrent devices, and there is a personnel door intended for entrance to and egress from the working space _______ from the nearest edge of the working space, the door shall open in the direction of egress and be equipped with listed panic equipment.
Less than 25 ft (2017 NEC: 110.26(C)(3))
For a commercial kitchen's electrical equipment, in no case shall the feeder, or service calculated load, be _______.
Less than the sum of the largest two kitchen equipment loads (2017 NEC: 220.56 & Table 220.56)
Inserts, that are used for cellular concrete floor raceways, shall be _______.
Leveled and sealed against the entrance of concrete (2017 NEC: 372.18(D))
What is recognized as an essential electrical system in a health care facility?
Life safety Equipment Critical (2017 NEC: 517.31(A))
The color coding used to identify an intrinsically safe circuit is _______.
Light blue (2017 NEC: 504.80(C))
The laundry of a dwelling unit must have at least _______.
One 20-ampere branch circuit with no other outlets (2017 NEC: 210.11(C)(2))
Each commercial building shall be provided with at least _______ for a sign.
One 20-ampere outlet that supplies no other loads (2017 NEC: 600.5(A))
Operating under normal procedures, typically, an area used for dispensing alcohol-based windshield washer fluid into motor vehicles, while in repair garages, shall be _______.
Unclassified (2017 NEC: 511.3(E)(2))
For a permanently installed pool what is NOT permitted to be connected with a flexible cord?
Underwater luminaries (2017 NEC: 680.8)
A stranded 6 AWG uncoated copper conductor is being placed in a 1 in. Type RMC raceway. What is this conductor's resistance per ft?
0.000491 ohms (2017 NEC: Chapter 9 Table 8)
The minimum thickness of a non-ferrous faceplate is _______.
0.040 in (2017 NEC: 404.9(C) & 406.6(A))
Which cable IS a substitution for FPLP?
CMP (2017 NEC: Table 760.154(A))
Where installed, and if there is a temperature change of 10 degrees F, the length change of Type PVC is _______ per 100 ft.
0.41 in (2017 NEC: Table 352.44)
A resistance welder has a duty cycle of 50 percent. What is this welder's multiplier?
0.71 (2017 NEC: Table 630.31(A)(2))
A mobile homes power-supply cord passes through the wall of a mobile home. The maximum size conduit that protects the power cord shall not exceed _______.
1 1.4 in (2017 NEC: 550.10(G))
A transformer's vault has ventilation openings to the indoors with automatic closing fire dampers. These fire dampers must have a standard fire rating of not less than _______.
1 1/2 hours (2017 NEC: 450.45(E))
Where a surface-mounted luminaire containing a ballast is to be installed on combustible low-density cellulose fiberboard, it shall be spaced not less than _______ from surface of the fiberboard.
1 1/2 in (2017 NEC: 410.136(B))
The trade size for a conduit that has a metric designator of 41 is _______.
1 1/2 in (2017 NEC: Chapter 9 Table 2)
A cable has been installed exposed to metal-corrugated sheet roof decking. This cable shall be installed, and supported, so that there is not less than _______ measured from the lowest surface of the roof decking to the top of the cable.
1 1/2 in. (2017 NEC: 300.4(E))
The minimum distance that 12-2 NM-B may be from the edge of a wood framing member without using a protective plate is _______.
1 1/4 in (2017 NEC: 300.4(A)(1))
A 6 in. wide flat-top underfloor raceway shall be covered with concrete to a depth of not less than _______.
1 in (2017 NEC: 390.4(B))
What are the standard fuse sizes?
1, 3, 6, 10, 601 (2017 NEC: 240.6(A) & Table 240.6(A))
A box consists of a barrier that is not marked. If nonmetallic, the volume considered to be taken up is _______.
1.0 cu in (2017 NEC: 314.16(A))
Based on an ambient temperature correction factor of 86 degrees F, conductors are being installed where conditions exist of 77 degrees F. These conductors are rated at 90 degree C. What is the required ambient temperature correction factor used for these conductors?
1.04 (2017 NEC: Table 310.15(B)(2)(a))
Without engineering supervision, the minimum size copper-clad conductor that may be run in parallel is _______.
1/0 AWG (2017 NEC: 310.10(H)(1))
The largest sized conductor that is permitted under an upturned lug is a/an _______.
10 AWG (2017 NEC: 110.14(A))
The neutral conductor of a 3-wire branch-circuit supplying a household electric range shall have an ampacity of not less than 70 percent of the branch-circuit rating and shall have a conductor not smaller than _______.
10 AWG (2017 NEC: 210.19(A)(3) Exception No. 2)
An equipment grounding conductor for secondary circuits of instrument transformers shall not be smaller than a/an _______ aluminum.
10 AWG (2017 NEC: 250.178)
The smallest size copper bonding conductor serving a panelboard for a patient care area is a/an_______.
10 AWG (2017 NEC: 517.14)
If provided for in a critical care area, the smallest size bonding conductor used to connect the grounding terminal of all grounding-type receptacles to the patient equipment grounding point is a/an _______ copper conductor.
10 AWG (2017 NEC: 517.19(D))
For amateur receiving stations, the protective (from antenna to termination) bronze grounding electrode conductor shall not be smaller than a/an _______.
10 AWG (2017 NEC: 810.58(B))
In a dwelling unit's hallway, a receptacle outlet is required when there is _______ or more of unbroken wall length.
10 feet (2017 NEC: 210.52(H))
In no case shall overhead service conductors, where the voltage does not exceed 300 volts, nominal, have a vertical clearance from finished grade of less than _______.
10 ft (2017 NEC: 230.26)
Low voltage lighting systems shall be installed not less than _______ horizontally from the nearest edge of a pool's water.
10 ft (2017 NEC: 411.5(B))
Lead-in conductors, attached to buildings, shall be installed so that they cannot swing closer than _______ to the conductors of circuits of 480 volts.
10 ft (2017 NEC: 810.18(A))
A flexible cord is used to supply a legally installed room air conditioner. The length of the cord shall not exceed _______ for a nominal, 120-volt rating or _______ for a nominal, 208- or 240-volt rating.
10 ft, 6 ft (2017 NEC: 440.64)
A wiring gutter consists of 3-300 kcmil copper conductors per terminal. The conductor does not enter or leave the enclosure through the wall opposite its terminal. The minimum width of the gutter for these conductors is _______.
10 in (2017 NEC: Table 312.6(A))
If installed, a metal underground water pipe in direct contact with the earth for ______ is permitted to be used as a grounding electrode.
10 or more ft (2017 NEC: 250.52(A)(1))
The required critical care life safety branch shall be installed, and connected to an alternate source of power, so that all functions shall be automatically restored to operation within _______ after the interruption of the normal source.
10 seconds (2017 NEC: 517.43)
Where fire protection is required in buildings over 75 feet in height, emergency lighting and emergency power, or both shall be available within the time required for the application but not to exceed _______.
10 seconds (2017 NEC: 700.10(D)(2) & 700.12)
Where using a smooth metallic sheath, bends in Type MC cable shall not exceed _______ the external diameter of a 3/4 in. cable.
10 times (2017 NEC: 330.24(A)(1))
A mobile home's service equipment shall be rated not less than _______.
100 amperes at 120/240 volts (2017 NEC: 550.32(C))
A metal box is being supported by Type IMC threaded raceways. The maximum size metal box used for supporting a luminaire shall not exceed _______.
100 cu in(2017 NEC: 314.23(F))
Using the optional calculation method for existing dwelling units, and where additional air-conditioning equipment or electric space-heating equipment is NOT to be installed, the first 8 kVA of the load is _______.
100 percent (first load) Remaining load at 40 percent (2017 NEC: 220.83(A))
When using the optional calculation method for the service of a dwelling unit, the general calculated load shall be not less than _______ plus 40 percent of the remainder of other certain loads.
100 percent of the first 10 kVA (2017 NEC: 220.82(A) & 220.82(B))
Fixed electric space heating loads shall be calculated at _______.
100 percent of the total connected load (2017 NEC: 220.51)
For conductors operating at 1000 volts or less, handhole enclosure covers shall require the use of tools to open, or they shall weigh over _______.
100 pounds (2017 NEC: 314.30(D))
For each service disconnect rated l000 amperes or more, ground-fault protection of equipment shall be provided for solidly grounded wye electric services of more than 150 volts to ground but not exceeding _______ volts phase-to-phase.
1000 (2017 NEC: 230.95 & 240.13)
The current carried continuously in bare copper bars in sheet metal auxiliary gutters shall not exceed _______ of cross section of the conductor.
1000 amperes/sq. in (2017 NEC: 366.23(A))
Listed flexible metal conduit that encloses the secondary circuit conductor from a transformer, or power supply for use with neon tubing, shall be permitted as a bonding means if the total accumulative length in the secondary circuit does not exceed _______.
100ft (2017 NEC: 600.7(B)(4))
Omitting exceptions, the disconnecting means for motor circuits rated 1000 volts, nominal, or less shall have an ampere rating not less than _______of the full-load current rating of the motor.
115 percent (2017 NEC: 430.110(A))
The maximum amperes of a cord-connected load to a receptacle that has a rating of 15 amperes is _______.
12 amperes (2017 NEC: Table 210.21(B)(2))
The maximum ampacity of a current-carrying three-conductor 15 AWG copper Type ETP flexible cord is _______.
12 amperes (2017 NEC: Table 400.5(A)(1) Note a)
Fixed lighting is located above lanes in a Class I location. The minimum height above the floor level for these light fixtures shall not be less than _______.
12 ft (2017 NEC: 511.7(B)(1)(b))
For outdoor pool luminaires that have been installed above the pool or the area extending 5 ft horizontally from the inside walls of the pool, they shall be installed at a height not less than _______ above the maximum water level of the pool.
12 ft (2017 NEC: 680.22(B)(1))
For indoor installations, where no GFCl protection is provided for a luminaire located above a hot tub, the mounting height of the luminaire shall be not less than _______ above the maximum water level.
12 ft (2017 NEC: 680.43(B)(1)(a))
A bathroom receptacle outlet is to be installed. This receptacle is to be installed no more than ______ below the top of the sink's basin.
12 in (2017 NEC: 210.52(D))
The NM cable shall be secured within _______ of the point where the cable enters the conduit.
12 in (2017 NEC: 334.15(C))
In clothes closets, the minimum clearance between luminaires and the nearest point of a closet storage space for a surface-mounted incandescent, or LED luminaires, with a completely enclosed light source installed on the wall above the door is _______.
12 in (2017 NEC: 410.16(C)(1))
Dry-type transformers installed outdoors, and exceeding 112 1/2 kVA, shall have a separation of at least _______ from combustible material of buildings.
12 in (2017 NEC: 450.22)
Receptacles, that are used for shore power at a marina, shall not be less than _______ above the deck surface of the pier.
12 in (2017 NEC: 555.19)
Supply service drops of 120/240 volts running above, and parallel to, communication service drops shall have a minimum separation of _______ at any point in the span.
12 in (2017 NEC: 800.44(A)(4))
Underground lead-in conductors shall be installed so that they are at least _______ from lighting circuits.
12 in (2017 NEC: 810.18(A))
Direct-buried coaxial cable shall be separated at least _______ from conductors of any light, or power, source.
12 in (2017 NEC: 820.47(B))
A wiring gutter consists of 3-700 kcmil copper conductors per terminal. The conductor does not enter or leave the enclosure through the wall opposite its terminal. The minimum width of the gutter for these conductors is _______.
12 in (2017 NEC: Table 312.6(A) & 450.12)
Type AC cable shall be secured within _______ of every outlet box at intervals not exceeding _______.
12 in, 4 1/2 ft (2017 NEC: 320.30(B) & (C))
Sign lighting outlets shall be calculated at a minimum of _______ for each required branch circuit.
1200 volt-amperes (2017 NEC: 220.14(F))
For other than certain motors, the temperature provisions of equipment for an 8 AWG copper conductor shall be _______.
140 degrees F (2017 NEC: 110.14(C)(1)(a)(1))
A feeder supplies both a continuous load and a noncontinuous load. The minimum feeder conductor size shall have an allowable ampacity not less than the noncontinuous load plus _______ of the continuous load.
125 percent (2017 NEC: 215.2(A)(1))
The minimum rating of a silicon carbide-type surge arrester shall be not less than _______.
125 percent (2017 NEC: 280.4(B))
If using a flanged surface inlet for electric-discharged luminaires, the minimum ampere rating of the inlet and connectors shall not be less than _______ of the luminaire load current.
125 percent (2017 NEC: 410.62(C)(3))
Variable loads are supplied to a single-phase converter. The conductors shall not be less than _____ of the phase converter's nameplate input full-load ampacity.
125 percent (2017 NEC: 455.6(A)(1))
For conductors that supply several motors, the conductors shall have an ampacity of _______.
125 percent of the full-load current rating of the highest rated motor, plus the sum of the full-load current ratings of all the other motors in the group (2017 NEC: 430.24(1) - (4))
A separate overload device is required for a motor with a marked service factor of 1.15. This overload device's maximum rating is _______ of the motor nameplate full-load current rating.
125% (2017 NEC: 430.32(A)(1))
For overhead conductors over 1000 volts, nominal, and where cables are installed within a cable assembly, the minimum size copper conductor shall not be less than ______.
14 AWG (2017 NEC: 225.6(A)(2))
Where festoon lighting is supported by a messenger wire, the minimum size conductor permitted is _______.
14 AWG (2017 NEC: 225.6(B))
Unless part of a listed decorative lighting assembly, the smallest size conductor for a mogul-base lampholder is _______.
14 AWG (2017 NEC: 410.54(B))
For communication circuits, the primary protector and the metallic member(s) of the cable sheath shall be bonded with a bonding conductor not smaller than a/an _______ copper.
14 AWG (2017 NEC: 800.100(A)(3))
For amateur receiving stations, the operating (between equipment) copper grounding electrode conductor shall not be smaller than a/an _______.
14 AWG (2017 NEC: 810.58(C))
The maximum distance between supports that are used for a 1 1/2 inch Type RMC running vertical is _______.
14 ft (2017 NEC: Table 344.30(B)(2))
Class 3 single signaling conductors, used as other wiring within buildings, shall not be smaller than _______.
18 AWG (2017 NEC: 725.179(H))
The minimum size SINGLE conductor for a PLFA circuit is a/an ________.
18 AWG (2017 NEC: 760.142)
The minimum size copper conductor for a motor's control circuit is _______.
18 AWG (2017 NEC: Table 430.72(B))
At least one 125-volt, single-phase, 15- or 20-ampere-rated receptacle outlet shall be installed within _______ of the top of a show window.
18 in (2017 NEC: 210.62)
For overhead service conductors, where the voltage between conductors does not exceed 300, a reduction in clearance above only the overhanging portion of the roof to not less than _______ shall be permitted if not more than six feet of overhead conductors passes above the roof overhang.
18 in (2017 NEC: 230.24(A) Exception No. 3)
Where a box is supported by a rigid stem. Stems longer than _______ shall be connected to the wiring system with listed swivel hangars suitable for the location.
18 in (2017 NEC: 314.23(H)(2))
Unless the luminaire is listed and identified for use at lesser depths, luminaires mounted in the wall(s) of a pool shall be installed with the top of the luminaire lens not less than _______ below the normal water level of the pool.
18 in (2017 NEC: 680.23(A)(5))
Where installed exposed, and within 7 ft of the floor, power-limited fire alarm circuit conductors shall be securely fastened at intervals not to exceed _______.
18 in (2017 NEC: 760.130(B)(1))
Where installed exposed, and within 7 ft of the floor, non-power-limited fire alarm circuit conductors shall be securely fastened at intervals not to exceed _______.
18 in (2017 NEC: 760.53(A)(1))
Equipment used for vapor processing systems is not within a protective enclosure. If the equipment contains flammable vapors, within _______ extending horizontally in all directions, the area is a Class I, Division 2 location.
18 in (2017 NEC: Table 514.3(B)(1))
The coupling means of the electric vehicle supply equipment shall be at a height of not less than _______ above the floor level for indoor locations, or not less _______ above the grade level for outdoor locations.
18 in, 24 in (2017 NEC: 625.50)
An industrial commercial loft's general lighting load is calculated at _______.
2 VA per square foot (2017 NEC: Table 220.12)
Lead-in conductors, attached to buildings, shall be installed so that they cannot swing closer than _______ to the conductors of circuits of 120 volts.
2 ft (2017 NEC: 810.18(A))
A mobile home's exterior disconnecting means shall be mounted not less than _______ above finished grade, and the center point of the grip of the handle shall be not more than _______ above finished grade.
2 ft, 6ft 7 in (2017 NEC: 550.32(F))
All electrified truck parking space supply equipment shall be accessible by an unobstructed entrance not less than _______wide, and not less than _______ high.
2 ft; 6 ft 6 in (2017 NEC: 626.22(C))
Several motors, each not exceeding _______ rating, shall be permitted to be used on an irrigation machine circuit protected at not more than 30 amperes at 1000 volts, nominal or less.
2 hp (2017 NEC: 675.10(A))
An electrical underground service is recognized "outside" of a building where installed under not less than _______ of concrete beneath a building.
2 in (2017 NEC: 230.6(1))
For a sign, the spacing between combustible materials and an HID lamp shall not be less than _______.
2 in (2017 NEC: 600.9(C))
A metal pole is used to support luminaires. The pole will have a handhole for supply terminations at its base. The handhole shall NOT be smaller than _______.
2 in x 4 in (2017 NEC: 410.30(B)(1))
The most common nominal cell voltage, per cell, for a lead-acid system is _______.
2 volts per cell(2017 NEC: 480.2 Definitions. Nominal Voltage (Battery or Cell) Informational Note)
The minimum burial depth for a ground ring shall be not less than _______ below the surface of the earth.
30 in (2017 NEC: 250.53(F))
The overall length of a power-supply cord that is used to feed a mobile home, measured from the end of the cord, including bared leads, to the face of the attachment plug cap shall not be less than _______ and shall not exceed _______.
21 ft, 36 ft (2017 NEC: 550.10(D))
A box contains 14 AWG aluminum conductors. Each conductor requires a volume allowance of _______.
2.00 cu inches (2017 NEC: Table 314.16(B))
Type FCC systems may be used as general-purpose circuits provided that the rating of the branch circuit does not exceed _______.
20 amperes (2017 NEC: 324.10(B)(2))
The output circuit of a power supply for a low-voltage lighting system is rated at a maximum of 25-amperes. The maximum ampacity for this low-voltage's lighting branch circuit is _______.
20 amperes (2017 NEC: 411.7)
The maximum ampacity for a neon sign is _______.
20 amperes (2017 NEC: 600.5(B)(1))
Other than a neon sign, the maximum ampacity for a sign's branch circuit shall not exceed _______.
20 amperes (2017 NEC: 600.5(B)(2))
Excluding exceptions, on the supply side of a power-limited fire alarm power source, transformers shall be protected by an overcurrent device rated not over _______.
20 amperes (2017 NEC: 760.127)
The minimum length of a bare copper conductor that is used for a concrete-encased electrode is _______.
20 ft (2017 NEC: 250.52(A)(3))
The primary protector bonding conductor located in one- and two-family dwellings shall be as short as practicable. The maximum length of a primary bonding conductor shall not exceed _______ in length.
20 ft (2017 NEC: 800.100(A)(4))
Fuel dispensing systems shall be provided with at least one clearly identified emergency shutoff device. This device is to be installed in approved locations not less than _______ from the fuel dispensing devices that they serve.
20 ft or more than 100 ft (2017 NEC: 514.11(A))
The melting point of compound, used in a conduit's seal off, shall be not less than _______.
200 degrees F (2017 NEC: 501.15(C)(2))
A show window shall be calculated at _______ per linear foot.
200 volt-amperes (2017 NEC: 220.14(G)(2) & 220.43(A))
Type SCE flexible cables shall be durably marked on the surface at intervals not exceeding _______.
24 in (2017 NEC: 400.6(A))
At least one receptacle outlet shall be installed at each kitchen's peninsular countertop long dimension space with a long dimension of _______ or greater and a short dimension of _______ or greater.
24 in, 12 in (2017 NEC: 210.52(C)(3))
The minimum clearance for overhead spans of open branch circuit conductors not over 1000 volts, nominal, above a track of a railroad is _______.
24.5 ft (2017 NEC: 225.18(5))
The output circuits of the power supply for a low-voltage lighting system shall be rated a maximum of _______ under all load conditions.
25 amperes (2017 NEC: 411.3)
Where a feeder is located in a high bay manufacturing building over 35 ft high at walls, tap conductors are NOT permitted over _______ long horizontally and not over _______ total length.
25 ft, 100 ft (2017 NEC: 240.21(B)(4)(2))
Plate electrodes shall be installed not less than _______ below the surface of the earth.
30 in (2017 NEC: 250.53(H))
Fixed specific loads are supplied to a single-phase converter. The conductors ampacity is less than 125 percent of the phase converter's nameplate input full-load ampacity. The conductors shall have an ampacity not less than _______ of the sum of the full-load, 3-phase current rating of the motors where the input and output voltages of the phase converter are identical.
250 percent (2017 NEC: 455.6(A)(2))
Where Type MC cable is used to provide an equipment grounding conductor, it shall comply with _______.
250.118(10) (2017 NEC: 330.108)
Round access openings in a manhole shall be not less than _______ in diameter.
26 in (2017 NEC: 110.75(A))
Rectangular access openings for manholes shall not be less than _______.
26 in x 22 in(2017 NEC: 110.75(A))
The maximum allowable ampacity for a 10 AWG copper fixture wire is _______.
28 amperes (2017 NEC: Table 402.5)
A mobile home's minimum number of required small appliance branch circuits shall be not less than _______.
3 (2017 NEC: 550.12(B))
If coils are used for motor overload protection, how many coils are required for a 3-phase motor?
3 (2017 NEC: Table 430.37)
Omitting exceptions, a dwelling unit's lighting load is calculated at _______.
3 VA per square ft (2017 NEC: Table 220.12)
A mobile home's required number of lighting branch circuits shall be based on _______.
3 Volt-amperes per square foot (2017 NEC: 550.12(A))
A bathroom receptacle outlet is to be installed. This receptacle shall be installed within _______ of the outside edge of each basin.
3 ft (2017 NEC: 210.52(D))
Omitting exceptions, the vertical clearance above the roof for overhead spans of open branch circuit conductors not over 1000 volts, nominal, shall be maintained for a distance not less than _______ in all directions from the edge of the roof.
3 ft (2017 NEC: 225.19(A))
The horizontal clearance of overhead open branch circuit conductors not over 1000 volts, nominal, shall be maintained for a distance not less than _______.
3 ft (2017 NEC: 225.19(C))
The minimum bending radius inner edge curve of 3/4 in. Type AC is _______.
3.75 in (2017 NEC: 320.24)
The maximum trade size of Type FMT is _______.
3/4 in (2017 NEC: 360.20(B))
A 3 in. wide half-round underground raceway shall have not less than _______ of wood above the raceway.
3/4 in (2017 NEC: 390.4(A))
The maximum number of non-compacted stranded 10 AWG RHW copper conductors placed in a 2 in. Type EMT raceway over 24 in. long is _______.
30 (2017 NEC: Chapter 9 Table C.1)
The maximum ampacity of a 10 AWG copper conductor is _______.
30 amperes (2017 NEC: 240.4(D)(7))
A 14 AWG copper conductor fixture wire may be tapped to a branch circuit that has a maximum rating of _______.
30 amperes (2017 NEC: 240.5(B)(2)(4))
Flat cable assemblies shall be permitted for branch circuits provided that the ampacity of the assembly does not exceed _______.
30 amperes (2017 NEC: 322.10(1))
Branch circuits supplying two or more outlets for fixed electric space-heating equipment shall be rated not over _______.
30 amperes (2017 NEC: 424.3(A))
If installed, shore power, for boats at a marina, shall be provided by receptacles rated at least _______.
30 amperes and shall be of the locking and grounding type (2017 NEC: 555.19(A)(4)(a))
The maximum distance that a mobile home's exterior service equipment is placed shall be located in sight from, and not more than, _______ from the exterior wall of the mobile home
30 ft (2017 NEC: 550.32(A))
The maximum spacing of straps that support SEC is _______.
30 in (2017 NEC: 230.51(A))
Using the optional method of calculation, the demand factor for 29 apartments, that are located within an apartment building, is _______.
33 percent (2017 NEC: Table 220.84)
What is the Metric Designator for a 1 1/4 in. rigid conduit?
35 (2017 NEC: Table 300.1(C))
Excluding exceptions, for handhole enclosures used on systems over 1000-volts, nominal, for angle pulls, the length of the box shall not be less than _______ times the outside diameter, over sheath, of the largest cable entering the box.
36 (2017 NEC: 314.71(B)(1))
The bend for a 2-inch Type IMC shall not exceed _______ between pull points.
360 degrees (2017 NEC: 342.26)
The bend for a 2-inch Type RMC shall not exceed _______ between pull points.
360 degrees (2017 NEC: 344.26)
Floor-mounted Type FCC cable shall be covered with carpet squares not larger than _______.
38.37 square in (2017 NEC: 324.41)
Omitting exceptions, for household ranges of 8 3/4 kW or more rating, the minimum branch-circuit rating shall be _______.
40 amperes (2017 NEC: 210.19(A)(3))
A mobile home that is factory equipped with gas cooking appliances shall be permitted to be provided with a listed mobile home power-supply cord rated at least _______.
40 amperes (2017 NEC: 550.10(A) Exception No. 1)
A supply service drop of 120/240 volts single-phase volts is running above a communication's service drop. The two services are attached to the same pole. Provided that the ungrounded conductors are insulated, there is to be a clearance of not less than _______ between the two services at the pole.
40 in (2017 NEC: 800.44(A)(4))
Stage cables for stage set lighting shall be protected by means of overcurrent devices set at not more than _______ of the ampacity given in the applicable Tables.
400 percent (2017 NEC: 530.18(A))
In amperes, the full-load current of a three-phase AC 230 volt 15 hp motor is _______.
42 amps (2017 NEC: Table 430.250)
For handhole enclosures used on systems over 1000-volts, nominal, for straight pulls, the length of the box shall not be less than _______ times the outside diameter, over sheath, of the largest shielded cable entering the box.
48 (2017 NEC: 314.71(A))
All electric pool water heaters shall have the heating elements subdivided into loads not exceeding _______ and protected at not over 60 amperes.
48 amperes (2017 NEC: 680.10)
The maximum number of 14 AWG THHN copper conductors that may be placed within a 3/8 in. Type FMC, with fittings located outside the conduit, is/are _______.
5 (2017 NEC: Table 348.22Add 1 additional conductor for the equipment grounding conductor)
An electrical receptacle outlet is installed in an attached garage that has electric power. To be counted as meeting the Code, the maximum height above the garage's floor for this receptacle is _______.
5 1/2 ft (2017 NEC: 210.52(G)(1))
Omitting exceptions, interior metal water piping located more than _______ from the point of entrance to the building shall not be used as a conductor to interconnect electrodes of the grounding electrode system.
5 ft (2017 NEC: 250.68(C)(1))
The area within _______ horizontally from an aircraft's fuel tank(s) shall be classified as a Class I, Division 2.
5 ft (2017 NEC: 513.3(C)(1))
Specifically, listed low-voltage luminaires not requiring grounding, not exceeding the low-voltage contact limit, and supplied by listed transformers, shall be permitted to be located less than _______ from the inside walls of the pool.
5 ft (2017 NEC: 680.22(B)(6))
All electrical equipment located within _______ of the inside wall of the specified body of water shall be grounded.
5 ft (2017 NEC: 680.6(2))
In buildings where there is NO intersystem bonding termination for the primary protection of communication circuits, a ground rod at least _______ in length may be driven into earth.
5 ft (2017 NEC: 800.100(B)(3)(2))
The maximum spacing between supports for a 2 in. Type PVC running horizontally is _______.
5 ft (2017 NEC: Table 352.30)
A motor dispensing fuel tank is located in a Class I Division 2 location. A vent services the aboveground fuel tank. The open-end of the vent shall extend between _______ in all directions.
5 ft and 10 ft (2017 NEC: Table 514.3(B)(1))
Three current-carrying conductors are being placed in a raceway. Based on an ambient temperature of 30°C (86°F), what is the maximum ampacity of these 8 AWG RHW copper conductors?
50 amperes (2017 NEC: Table 310.15(B)(16))
For overhead conductors of 1000 volts, nominal, or less, and without using a messenger wire, a 10 AWG copper is permitted for spans up to ______ in length.
50 ft (2017 NEC: 225.6(A)(1))
Where installed in nonmetallic conduit, what is the maximum length for a neon sign's secondary circuit conductors, over 1000 volts, nominal, from a high voltage terminal to the first neon tube electrode?
50 ft (2017 NEC: 600.32(J)(1)(1) - (2))
A general-use snap switch suitable, for use on either ac or dc circuits, is permitted to control inductive loads not exceeding _______ of the ampere rating of the switch at the applied voltage.
50 percent (2017 NEC: 404.14(B)(1) - (3))
A capacitor is operating at 600-volts nominal. The capacitor has been disconnected from its source of supply. The residual voltage of this capacitor shall be reduced to _______, nominal, or less within _______.
50 volts, one minute (2017 NEC: 460.6(A))
For the first 20,000 volt-amperes, the lighting load demand factor for a hotel is _______.
50% (2017 NEC: Table 220.42)
The demand factor for a feeder that services 12 park sites is _______.
50% (2017 NEC: Table 551.73(A))
If a breaker's interrupting rating is not shown on the breaker, the breaker is to be considered rated at _______.
5000 amperes (2017 NEC: 240.83(C))
Where the conditions of maintenance and supervision ensure that only qualified persons service the installation, nonshielded, ozone-resistant insulated conductors with a maximum phase-to-phase voltage of _____ shall be permitted in Type MC cables in industrial establishments.
5000 volts (2017 NEC: 310.10(E))
The load for dwelling electric clothes dryers shall be either _______ or the nameplate rating--whichever is larger--for each dryer that is served.
5000 watts (2017 NEC: 220.54)
Three single insulated 120-volt conductors are being supported on a messenger wire with an ambient air temperature of 104°F. What is the maximum ampacity of these 8 RHW copper conductors?
57 amperes (2017 NEC: Table 310.15(B)(20))
To be counted as a required exterior outlet located on either a single-family dwelling, or a multi-family dwelling, the receptacle must be located not more than _______ above grade level.
6 1/2 ft (2017 NEC: 210.52(E)(1) & (2))
A balcony is attached to a dwelling unit. It is accessible from inside the dwelling unit. To meet minimum code requirements, the balcony shall have a receptacle outlet located not more than _______ above the balcony's walking surface.
6 1/2 ft (2017 NEC: 210.52(E)(3))
A bonding jumper not smaller than _______ shall be connected between the community antenna television system's grounding electrode and the power grounding electrode system at the building.
6 AWG copper (2017 NEC: 820.100(D))
A supplemental electrode made of a rod is connected by a supplemental grounding electrode conductor. This conductor is not required to be larger than a/an _______.
6 AWG copper wire or 4 AWG aluminum wire (2017 NEC: 250.53(E))
The required dedicated space above a 600-volt panelboard is _______.
6 feet above the equipment or to the structural ceiling, whichever is lower (2017 NEC: 110.26(E)(1)(a))
Where nipples having a maximum length not to exceed 24 in. are installed between boxes, the nipples shall be permitted to be filled to _______ of their total cross-sectional area.
60% (2017 NEC: Chapter 9 Table 1 Notes to Tables (4))
A transformer over 1000 Volts has a rated impedance of 4%. It has been installed in an unsupervised location. A circuit breaker is being used as its PRIMARY overcurrent protection. Excluding exceptions, the maximum rating of this transformer's circuit breaker is _______.
600 percent (2017 NEC: Table 450.3(A))
The basis of calculation for an electrical supply to a dedicated tent site is _______.
600 volt-amperes per site equipped with only 20-ampere supply (2017 NEC: 551.73(A))
The maximum output voltage for non-power-limited fire alarm circuits is _______.
600 volts, nominal (2017 NEC: 760.41(A))
Where connected to a branch circuit having a rating in excess of 20-amperes, a heavy-duty lampholder shall have a rating of not less than _______ if of the admedium type.
660 watts (2017 NEC: 210.21(A))
The maximum ampacity of an 18 AWG copper conductor is _______.
7 amperes (2017 NEC: 240.4(D)(1))
An 18 AWG copper conductor is used to provide power for a Class 1 power-limited circuit. The maximum ampacity of this conductor is _______.
7 amperes (2017 NEC: 725.43)
In field fabricated installations, the minimum clearance of live parts for a 14.4 kV system, phase-to-ground, installed outdoors is _______.
7 in (2017 NEC: Table 490.24)
A single-phase 120/240-volt electric range is located within a single-family dwelling. It is permitted to have an additional demand of _______ applied to the maximum unbalanced load of the neutral conductor.
70 percent (2017 NEC: 220.61(B))
In each dwelling unit, other than electric dryers, electric ranges and the like, it shall be permitted to apply a demand factor of _______ to the nameplate rating load of four or more appliances fastened in place.
75 percent (2017 NEC: 220.53)
The maximum number of non-compacted stranded 8 AWG THW-2 copper conductors placed in a 1 in. Type RMC raceway over 40 in. long is _______.
8 (2017 NEC: Chapter 9 Table C.9)
Using a one shot bender, the required "take-up" for the bending radii of a 1 1/2 in. Type IMC is _______.
8 1/4 in (2017 NEC: Chapter 9 Table 2)
A multifamily dwelling is a/an _______.
Building that contains three or more dwelling units (2017 NEC: 100. Definitions)
Since, a premises wiring system supplied by a grounded ac service shall have a grounding electrode conductor connected to the grounded service conductor, at each service, when sizing for a single raceway, the minimum size copper grounded conductor shall not be smaller than _______.
8 AWG (2017 NEC: 250.24(C)(1); Table 250.102(C)(1) & 250.24(A))
The minimum size copper equipment grounding conductor that is used for a 100 ampere rated disconnect is a/an _______.
8 AWG (2017 NEC: 250.122 (A) & Table 250.122)
Where installing 2 AWG copper ungrounded service entrance conductors, the minimum size copper grounding electrode conductor shall be not less than a/an _______.
8 AWG (2017 NEC: Table 250.66)
All metal parts of a pool shall be bonded together using a minimum size _______.
8 AWG solid copper (2017 NEC: 680.26(B))
Omitting exceptions, overhead service conductors shall have a vertical clearance of not less than _______ above the roof line.
8 ft 3 ft in all directions from the roof edge (2017 NEC: 230.24(A))
Where a box is supported by a single conduit with threaded joints, the minimum height for this box shall be at least _______ above finished grade.
8 ft (2017 NEC: 314.23(H)(2))
The minimum height that a pendant lighting fixture is permitted to be mounted above a bathtub is _______.
8 ft (2017 NEC: 410.10(D))
Excluding exceptions, network-powered broadband communications cables attached to a structure and located within _______ of finished grade shall be protected by enclosures.
8 ft (2017 NEC: 830.44(G)(4))
Direct-buried conductors emerging from grade shall be protected to a point at least _______ above finished grade. In no case shall the protection be required to _______ below finished grade.
8 ft, exceed 18 in (2017 NEC: 300.5(D)(1))
For nonshielded conductors installed in systems over 1000 volts, nominal, the minimum bending radius is _______ the overall diameter.
8 times (2017 NEC: 300.34)
The rating of any one cord-and-plug-connected utilization equipment not fastened in place shall not exceed_______ of the branch-circuit ampere rating.
80 percent (2017 NEC: 210.23(A)(1))
A stationary ac motor is rated at 300 volts. A general-use snap switch suitable for ac only is being used. The motor's full-load current rating is not permitted to be more than _______of the ampere rating of the switch.
80 percent (2017 NEC: 430.83(C)(2) & 430.109(C)(2))
Four conductors over 24 inches are placed within a 2" EMT. The adjustment factor for these conductors shall be at least _______.
80 percent (2017 NEC: Table 310.15(B)(3)(a))
An instantaneous trip breaker is being used for a, non-wound rotor, three-phase motor. What is the maximum rating of this breaker?
800 percent (2017 NEC: Table 430.52)
A single-phase 120/240-volt electric range rated at 12,000 watts is located within a single-family dwelling. What is this electric range's maximum demand requirement?
8000 watts (2017 NEC: Table 220.55)
Storage batteries, that are required for a legally required standby system, shall maintain a total load for a period of at least 1 1/2 hours without the voltage load falling below _______ percent of normal.
87 1/2 (2017 NEC: 701.12(A))
The maximum number of 12 AWG copper conductors that are permitted within a 4 in. x 1 1/2 in. square metal box is _______.
9 (2017 NEC: Table 314.16(A))
Where 2/0 AWG single-conductor cables are installed on ladder cable trays, the maximum allowable rung spacing is _______.
9 in (2017 NEC: 392.10(B)(1)(a))
Where none of the bonded parts is in direct connection with the pool water, the pool water shall be in direct contact with an approved corrosion-resistant conductive surface that exposes not less than _______ of surface area to the pool water at all times.
9 square in (2017 NEC: 680.26(C))
Temporary electric power shall be permitted for a period not to exceed _______ for holiday decorative lighting.
90 days (2017 NEC: 590.3(B))
Luminaires shall be installed so that adjacent combustible material will not be subjected to temperatures in excess of _______.
90 degrees C (2017 NEC: 410.115(A))
Where installing electric heating panels, the first item, where the leads emerge within the floor slab, is _______.
A bushing (2017 NEC: 424.98(E))
Which conductors are not required to be counted when applying the adjustment factors for more than three current-carrying conductors within a raceway?
A neutral conductor that carries only the unbalanced current from other conductors of the same circuit. (2017 NEC: 310.15(B)(5)(a))
Each critical care patient bed location shall be supplied _______ branch circuits.
By at least two (2017 NEC: 517.19(A))
Elevators shall have _______ means for disconnecting all ungrounded car light, receptacle(s), and ventilation power supply conductors for that elevator car.
A single (2017 NEC: 620.53)
When determining box fill for equipment grounding conductors, this determination is based on _______.
A single volume allowance for the largest equipment grounding conductor present (2017 NEC: 314.16(B)(5))
When arranging AC phases on 3-phase buses, what is the standard arrangement?
A. B. C. from front to back with B. having the higher voltage (2017 NEC: 408.3(E)(1))
Solid dielectric insulated conductors operated _______ volts in permanent installations shall have ozone resistant insulation and shall be shielded.
Above 2000 (2017 NEC: 310.10(E))
Overcurrent devices are NOT permitted in what areas?
Above steps Bathrooms Areas with easily ignitable materials Areas exposed to physical damage (2017 NEC: 240.24(C) - (F))
Accessible, as applied to readily accessible, is BEST defined as?
Admitting close approach not guarded by locked doors (2017 NEC: 100. Definitions)
Accessible, as applied to equipment, is BEST defined as _______.
Admitting close approach not guarded by locked doors (2017 NEC: 100. Definitions)
Type NM cable is permitted to be installed in what areas?
Air voids in tile walls (2017 NEC: 334.10(A)(2) & 334.12(A)(3)(5)(7))
The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating is referred to as _______.
Ampacity (2017 NEC: 100. Definitions)
A backfed plug-in-type of overcurrent protection has been installed to terminate field-installed ungrounded supply conductors. This breaker shall be secured in place by _______.
An additional fastener that requires other than a pull to release the device from the mounting means on the panel (2017 NEC: 408.36(D))
Which limited-use cables is listed as both suitable for use in dwellings and raceways and listed as resistant to flame spread?
CL2X (2017 NEC: 725.179(D))
Ferrous metal raceways shall be protected by a coating of _______ corrosion-resistant material.
Approved (2017 NEC: 300.6(A))
Where passing from the interior to the exterior of a building, a raceway shall be filled with a/an _______ material to prevent the circulation of warm air to a colder section of the raceway.
Approved (2017 NEC: 300.7(A))
Where is a GFCI required for an agricultural area?
Areas having a equipotential plane Damp or wet locations Dirt confinement areas for livestock Outdoors (2017 NEC: 547.5(G)(1) - (4)
Type MC cable is permitted _______.
As aerial cable on a messenger In any raceway for services, feeders, and branch circuits Not Permitted Where exposed to vapors of chlorine or other destructive corosive conditions for services (2017 NEC: 330.10(A)(1)(7)(8) & 330.12(2)b)
When is an emergency fire protection system mandatory?
Assembly occupancies for not less than 1000 persons Buildings above 23m (75ft) in height Educational occupancies with more than 300 occupants (2017 NEC: 700.10(D)(1) - (4))
A pool's disconnecting means shall be both readily accessible and within sight from its equipment served. The disconnecting means shall be located _______ from the inside walls of the pool.
At least 5 ft horizontally (2017 NEC: 680.13)
If new products, not yet available at the time when the Code was adopted, are made available, who may permit the use of these products?
Authority having jurisdiction (2017 NEC: 90.4)
Who has the responsibility for enforcement of the Code, and for making interpretations of the rules?
Authority having jurisdiction (2017 NEC: 90.4)
Typically, conductors that have been installed within manholes for personnel entry, shall NOT be _______.
Blocking entry (2017 NEC: 110.74)
For mandatory bonding purposes, what required in a Class I, Division 1 location?
Bonding jumpers with proper fittings (2017 NEC: 501.30(A)
An escalator's motor is rated as _______.
Continuous (2017 NEC: 620.61(B)(1)(2))
Overcurrent protection for feeders and branch circuits supplying an electric vehicle's equipment shall be sized for _______ and shall have a rating of not less than _______ of the equipment.
Continuous duty; 125 percent of the maximum load (2017 NEC: 625.41)
Fixed electric heating equipment for pipelines and vessels shall be considered a/an _______.
Continuous load(2017 NEC: 427.4)
Since illumination is required for all working spaces about electrical equipment, _______ is NOT a permitted source of illumination.
Control of an overhead light by automatic control only (2017 NEC: 110.26(D))
Other than short-radius conduit bodies, conduit bodies enclosing 6 AWG conductors or smaller shall have a/an _______.
Cross-sectional area not less twice the cross-sectional area of the largest conduit to which they can be attached (2017 NEC: 314.16(C)(1))
What is required to be directly connected to an insulated copper equipment grounding conductor serving patient care spaces?
Current-carrying conductive surfaces of fixed electrical equipment likely to become energized that are subject to personal contact The grounding terminals of all receptacles other than isolated ground receptacles Metal boxes that are being used Non-current-carrying conductive surfaces of fixed electrical equipment likely to become energized that are subject to personal contact, operating at under 100 volts. (2017 NEC: 517.13(B)(1)(1) - (3))
What isn't required to be grouped for overhead spans of open conductors not over 1000 volts, nominal?
Disconnecting means for a water pump intended for fire protection 92017 (NEC: 225.34(A) Exception)
Which service disconnecting means is NOT required to be grouped?
Disconnecting means for a water pump to provide for fire protection (2017 NEC: 230.72(A) Exception)
A panelboard has been installed within the mechanical room of a commercial building. Every circuit of this panelboard shall be legibly identified in a manner that _______.
Does not depend on transient conditions of occupancy (2017 NEC: 408.4(A))
A yoke containing a device is present within a box. A _______ allowance shall be made based on the largest conductor that is attached to the yoke.
Double volume (2017 NEC: 314.16(B)(4))
Raceways on exteriors of buildings shall be arranged to _______.
Drain downwind (2017 NEC: 225.22)
A luminaire intended for installation in the floor of a pool, in a niche that is sealed against the entry of water, is referred to as a/an _______.
Dry-niche luminaire (2017 NEC: 680.2 Definitions)
Each general care patient bed location shall be provided with a minimum of _______ hospital grade receptacles.
Eight (2017 NEC: 517.18(B))
In other than family dwelling units, where electrical equipment, such as switchboards, is likely to require examination, adjustment, servicing, or maintenance while energized, it shall have a label that warns qualified persons of potential _______.
Electric arc flash hazards (2017 NEC: 110.16(A))
The equipment grounding conductor that is running with the circuit conductors, shall be?
Electrical metallic tubing Intermediate metal conduit Rigid metal conduit Copper, aluminum, or copper-clad aluminum conductor flexible metal conduit (20 amps or less, no mor than size 35 or 1 1/4 in (2017 NEC: 250.118(5)c)
A 20-ampere, 125-volt receptacle has been installed outdoors in a location that is NOT protected from the weather. It shall have a/an _______.
Enclosure that is weatherproof whether or not the attachment plug cap is inserted (2017 NEC: 406.9(B)(1))
To create an electrically parallel path, both ferrous metal raceways and enclosures shall be bonded at _______ of the raceway or enclosure to the grounding electrode conductor.
End to end (2017 NEC: 250.64(E)(1))
The connection between two or more portions of the equipment grounding conductor defines a/an _______.
Equipment bonding jumper (2017 NEC: 100. Definitions)
An area where conductive elements are placed under concrete, bonded to all metal structures and fixed nonelectrical equipment that may become energized, and connected to the electrical grounding system to minimize voltage differences within the plane and between the planes, the grounded equipment, and the earth, defines a/an _______.
Equipotential plane (2017 NEC: 547.2 Definitions)
Which motor installations is considered to be continuous?
Escalator (2017 NEC: 430.33)
The sum of the cross-sectional areas of all contained cables, at any cross section of a metal wireway shall not _______ of the interior cross-sectional area of the wireway.
Exceed 20 percent (2017 NEC: 376.22(A))
Overload devices are intended to protect motor branch-circuit conductors against _______.
Excessive heating due to motor over loads and failure to start (2017 NEC: 430.31)
What is permitted to be used when connecting equipment to equipment grounding conductors, grounding electrode conductors and bonding jumpers?
Exothermic welding process Terminal bars Listed pressure connectors (2017 NEC: 250.8(A)(1) - (8))
Each sign's branch circuit shall be controlled by a/an _______.
Externally operable switch or circuit breaker that opens all ungrounded conductors and controls no other load (2017 NEC: 600.6)
Flexible cords, that are used in connection with an aircraft's mobile equipment, shall be suitable for the type of service and identified for _______.
Extra-hard usage (2017 NEC: 513.10(D)(2))
Power-limited fire alarm plenum cable is identified as a/an _______.
FPLP (2017 NEC: Table 760.179(I))
Type MI is a/an _______.
Factory assembly of one or more conductors insulated with a highly compressed refractory mineral insulation and enclosed in a liquidtight and gastight continuous copper or alloy steel sheath (2017 NEC: 332.2 Definition)
A/an _______ consists of all the circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device.
Feeder (2017 NEC: 100. Definitions)
When is a 2-wire, DC system, not required to be grounded?
Fire alarm circuits having a maximum current rating of 0.030 amperes. (2017 NEC: 250.162(A) Exception No. 3:)
When working with fixed stage switchboard
Fixed stage switchboards shall be readily accessible, yet shall not be required to be located on or adjacent to the stage A fixed stage switchboard shall be permitted to supply both stage and non-stage equipment A fixed stage switchboard shall contain overcurrent protective devices for all branch circuits supplied by that switchboard (2017 NEC: 520.21(2) - (4))
Walls that are constructed of wood, cabinets shall be _______.
Flush with finished surface (2017 NEC: 312.3)
When is the controller permitted to be an attachment plug and receptacle or cord connector for a motor?
For a portable motor rated at 1/3 hp or less (2017 NEC: 430.81(B))
Which is permitted to be used as a grounding electrode?
Galvanized conduit not smaller than 3/4" trade size(2017 Not permitted: The structures and structural reinforcing steel described in 680.26(B)(1) and (B)(2) Metal underground gas piping systems Aluminum. NEC: 250.52(B)(1) - (3))
A/an _______ branch-circuit supplies two or more receptacles or outlets for lighting and appliances.
General purpose (2017 NEC: 100. Definitions)
If a listed handhole enclosure is effectively identified, and it is accessible without excavating, the handhole enclosure shall be permitted where covered by _________.
Gravel Light aggregate non-cohesive granulated soil (2017 NEC: 314.29 Exception)
Single-throw knife switches shall be placed so that _______.
Gravity will not tend to close them (2017 NEC: 404.6(A))
A 10 AWG copper conductor is to be used as an insulated grounded conductor. What colors are permitted to identify this conductor as a grounded conductor.
Gray White Gray striping (2017 NEC: 200.6 (A)(1) - (8))
Where a primary protector is installed inside a building, the communications wires shall enter the building through a noncombustible insulating bushing. Conduits located ahead of the primary protector shall be _______.
Grounded (2017 NEC: 800.50(C))
Omitting exceptions, if exposed structural metal that is interconnected to form the building frame exists in the area served by the separately derived system, it shall be bonded to the _______.
Grounded conductor of each separately derived system (2017 NEC: 250.104(D)(2)
A conductor that is used to connect to ground or to a conductive body that extends the ground connection BEST describes a/an _______.
Grounding conductor (2017 NEC: 100. Definitions)
A surge arrester shall be connected to?
Grounding electrode for the service Grounding electrode conductor Grounded service conductor (2017 NEC: 280.21(1) - (4))
Specifically, the lightning protection system ground terminals shall be bonded to the building or structure _______.
Grounding electrode system (2017 NEC: 250.106)
A connection shall be made between equipment grounding conductor(s) and a metal box by means of a/an _______.
Grounding screw (2017 NEC: 250.148(C))
An individual protective device being used for supplying hermetic refrigerant motor-compressor(s) is required to _______.
Have a rating not exceeding 175 percent of the motor-compressor rated-load current, and the rating shall not exceed 225 percent of the motor rated-load current (2017 NEC: 440.22(A))
The paralleled conductors in each phase shall?
Have the same insulation type Be the same length Consist of the same conductor material Be the same size in circular mil area Be terminated in the same manner (2017 NEC: 310.10(H)(2)(1) - (5))
The mechanical execution of work refers to _______.
How electrical work shall be installed in a neat and workmanlike manner (2017 NEC: 110.12)
Conduits, through which moisture may contact live parts, shall be sealed at either or both ends. The sealant shall be _______ for use with the cable insulation.
Identified (2017 NEC: 300.5(G))
Type CL3P is permitted to be used _______.
In a plenum For general purpose signaling applications As a riser for remote control applications Not Permitted: In direct underground burial applications (2017 NEC: 725.179(A))
Service entrance conductors are being run open through the ceiling of a single-family dwelling. The service entrance disconnecting means shall be installed either outside of this building, or _______.
Inside nearest the point of entrance of the service entrance conductors (2017 NEC: 230.70(A)(1))
What is NOT covered in the Code?
Installations under the exclusive control of an electric utility where such installations consist of service drops or service laterals, and associated metering Covered: Installations used by the electric utility such as warehouses Yards, lots, parking lots, carnivals, and industrial substations Installations used by the electric utility such as office buildings. (2017 NEC: 90.2(A) & (B))
Where installing electrical equipment, its listing shall be installed as per the _______.
Instructions included in the listing or the labeling (2017 NEC: 110.3(B))
The proper switching sequence for series capacitors over 1000 volts, nominal, includes___________.
Interlocks Switching procedure prominently displayed at the switching location Mechanically sequenced isolating and bypass switches (2017 NEC: 460.24(C)(1) - (3))
Which are an alteration to prevent objectionable current?
Interrupt the continuity of the conductor or conductive path causing the objectionable current Change the locations of the grounding connections Discontinue one or more but not all of such grounding connections 92017 NEC: 250.6(B)(1) - (4))
Equipment that is used to change voltage level or waveform, or both, of electrical energy is commonly referred to as a/an _______.
Inverter (2017 NEC: 690.2 Definitions)
A transformer that supplies power to a pool's underwater luminaire(s) shall incorporate a transformer of the _______.
Isolated winding type, with an ungrounded secondary that has a grounded metal barrier between the primary and secondary windings (2017 NEC: 680.23(A)(2))
Where an internal cable clamp is present in the box, a single volume allowance shall be made based on the _______.
Largest conductor present (2017 NEC: 314.16(B)(2))
Excluding exceptions, a building is permitted to be supplied by only _______ service(s).
One (2017 NEC: 230.2)
Electrical systems that are grounded shall be connected to earth in a manner that.
Limit the voltage imposed by unintentional contact with higher-voltage lines Limit the voltage imposed by line surges Limit the voltage imposed by lightning(2017 NEC: 250.4(A)(1))
Excluding exceptions, for electrified truck parking equipment, that is supplied with a 20-ampere, 125-volt receptacle, it shall use a/an _______.
Listed 20-ampere power-supply cable assembly (2017 NEC: 626.25(A)(1))
Where nonmetallic-sheathed cables pass through a factory drilled hole in metal members, the cable shall be protected by _______.
Listed bushings (2017 NEC: 300.4(B)(1))
Circuits exceeding 120 volts, nominal, between conductors and not exceeding 277 volts, nominal, to ground, shall be permitted to supply _____________.
Luminaires equipped with mogul-base screw shell holders Auxiliary equipment of electric-discharge lamps Listed electric-discharge, or listed, light-emitting diode-type luminaires. (2017 NEC: 210.6(C)(1) - (6))
The connection between the grounded circuit conductor and the equipment grounding conductor at the service is referred to as a/an _______.
Main bonding jumper (2017 NEC: 100. Definitions)
A building where engine overhauls, painting and body work are performed is known as a/an _______.
Major repair garage (2017 NEC: 511.2 Definitions)
What is required on Type FCC cable?
Maximum temperature rating Material of conductors Ampacity (2017 NEC: 324.120(A)(1) - (3))
Type MV cable represents?
Medium-voltage cable (2017 NEC: 328.2 Definition)
Since all branch circuits serving patient care spaces shall be provided with an effective ground-fault current path, what is recognized as an effective ground-fault current path?
Metal raceway Cable having a metal sheath assembly Cable having a metallic armor (2017 NEC: 517.13(A))
Referring to transformers over 112 1/2 kVA rating, and excluding ALL exceptions, the term fire resistant means a construction having a_______.
Minimum fire rating 1 (2017 NEC: 450.21(B))
Which conductor insulations is permitted within a wet location?
Moisture-impervious metal- sheathed types MTW, RHW, RHW-2, TW, THW, THW-2, THHW, THWN, THWN-2, XHHW, XHHW-2, ZW (2017 NEC: 310.10(C)(2))
Installations within, or behind a surface of, gypsum board shall be made so that the front edge of the box will not be set back of the finished surface _______.
More than 1/4 in (2017 NEC: 314.20)
Individual dry-type transformers of _______ rating shall be installed in a transformer room of fire-resistant construction.
More than 112 1.2 kVA (2017 NEC: 450.21(B))
Receptacle outlets shall be installed so that no point along the wall line of a kitchen's work surface is _______ measured horizontally from a receptacle outlet in that space.
More than 24 in (2017 NEC: 210.52(C)(1))
A/an _______ is a type of surface, flush, or freestanding raceway designed to hold conductors and receptacles, assembled in the field or at the factory.
Multioutlet assembly (2017 NEC: 100. Definitions)
The maximum gap around a metal box, that will require a faceplate, shall be _______ at the edge of the box.
NO more than 1/8 in (2017 NEC: 314.21)
When installing Type IMC in Class 1 locations, the thread form connection shall be _______.
NPT (2017 NEC: 500.8(E) & (E)(1))
Each elevator, dumbwaiter, escalator and platform lift is to have _______ means of disconnecting all ungrounded main power supply conductors.
One (2017 NEC: 620.51)
Omitting exceptions, the bathroom of a dwelling unit must have at least _______.
One 120-volt, 20-ampere branch circuit with no other outlets (2017 NEC: 210.11(C)(3))
Where seed is handled in a manner that produces low quantities of dust, the amount of dust deposited is a/an _______.
Non-classified area (2017 NEC: 500.5(C)(2) Informational Note: 2)
Since service-entrance conductors shall have an ampacity of not less than the maximum load to be served; therefore, the minimum allowable ampacity is not less than the sum of the _______.
Noncontinuous loads plus 125 percent of continuous loads Your Answer(2017 NEC: 230.42(A)(1))
Which area is NOT required to have a tamper-resistant receptacle? Which area is required to have a tamper-resistant receptacle?
Not Required: Receptacles located more than 5 1/2 feet above the floor Required: Preschools where the receptacle is located less than four feet above the floor Child care facilities where the receptacle is installed less than 3 feet above the floor Guest rooms and guest suites of hotels and motels where the receptacle is located less than two feet above the floor (2017 NEC: 406.12(2)(3)(4) & Exception: (1))
The minimum ampacity of the conductors from a generator's output terminals to the first distribution device(s) containing overcurrent protection shall _______.
Not be less than 115 percent of the nameplate current rating of the generator (2017 NEC: 445.13(A))
For an elevator, the lightning protection system's down conductor(s) shall _______.
Not be located within the hoistway (2017 NEC: 620.37(B))
A feeder is supplying a specific group of motors. This feeders protective device is rated at _______.
Not greater than the largest rating of the branch-circuit short-circuit plus the sum of the full-load currents of the other motors of the group (2017 NEC: 430.62(A))
When conductors supply a single motor that is used in a continuous application, the conductors shall have an ampacity of _______.
Not less than 125 percent of the motor full-load current rating (2017 NEC: 430.22)
An electrically operated in-sink waste disposer's cord shall be _______.
Not less than 18 in. and not over 36 in (2017 NEC: 422.16(B)(1)(2))
Where a permanently installed pool is installed, no fewer than one 125-volt, 15- ampere receptacle on a general-purpose branch circuit shall be located a minimum of _______ from the inside wall of the pool.
Not less than 6 ft (2017 NEC: 680.22(A)(1))
For electric signs and outline lighting, switches controlling transformers shall be rated for _______.
Not less than twice the current rating of the transformer (2017 NEC: 600.6(B))
A cord is be used for an electric-discharge luminaire. The luminaire is provided with a mogul-base screw shell lampholder. This luminaire is permitted to be connected to a branch circuit _______.
Of 50 amperes or less (2017 NEC: 410.62(C)(2))
A disconnecting means for refrigerating equipment is permitted to be placed?
On the refrigerating equipment unit Within sight of the refrigerating equipment Within the refrigerating equipment (2017 NEC: 440.14)
A dwelling unit must have at least _______ receptacle outlet(s) installed in areas designated for the installation of laundry equipment.
One (2017 NEC: 210.52(F))
At least _______ wall switch-controlled lighting outlet shall be installed in every habitable kitchen.
One (2017 NEC: 210.70(A)(1))
Where the transformer supplying the service is located outside the building, at least _______ grounding connection shall be made from the grounded service conductor to a grounding electrode.
One additional (2017 NEC: 250.24(A)(2))
Excluding exceptions, each service drop shall supply only _______ of service-entrance conductors.
One set (2017 NEC: 230.40)
Single-throw knife switches shall be connected such that their blades are de-energized when the switch is in the _______.
Open position (2017 NEC: 404.6(C))
On a 4-wire, delta-connected service, where the midpoint of one phase winding is grounded, the service conductor having the higher phase voltage to ground shall be durably and permanently marked by an outer finish that is _______ in color.
Orange (2017 NEC: 230.56)
The first isolated circuit conductor that is provided for in a health care facility is the color _______.
Orange (2017 NEC: 517.160(A)(5)(1) - (2))
If installed indoors, transformers, rated over _______ insulated with a dielectric fluid identified as nonflammable, shall be installed in a vault.
Over 35,000 volts (2017 NEC: 450.24)
For the purposes of bonding metal piping systems and exposed structural metal, which is not required to be bonded?
Plastic wire pipe (2017 NEC: 250.104(A)(1)(1) - (4) & (C)(1) - (5))
The point within a building at which the optical fiber cable emerges from a concrete floor slab is referred to as a/an _______.
Point of entrance (2017 NEC: 770.2 Definitions)
Thermostatically controlled switching devices shall be permitted to serve as both controllers and disconnecting means, provided they meet which conditions?
Provided with a marked off position Directly open all ungrounded conductors when manually placed in the off position Designated so that the circuit cannot be energized automatically after the device has been manually placed in the off position Located as specified in 424.19 (2017 NEC: 424.20(A)(1) - (3))
Within the electrical industry, one who has the skills and the knowledge related to the construction and operation of the electrical equipment and installations, and who has received safety training to recognize and avoid the hazards involved is referred to as a/an _______.
Qualified person (2017 NEC: 100. Definition)
Omitting exceptions, which are permitted to be run vertically within ducts specifically fabricated to transport environmental air?
RMC EMT FMC (2017 NEC: 300.22(B))
Where subjected to direct burial, with severe corrosive influences, which is permitted to be used?
RMC IMC Stainless steel (2017 NEC: 344.10(B)(1))
Each motor used in a continuous duty application and _______ shall be protected against overload.
Rated more than 1 hp (2017 NEC: 430.32(A))
Each heating cable shall be marked with ____________.
Ratings in volts and watts Identification name or identification symbol Catalog number ( 2017 NEC: 424.35)
Excluding exceptions, each occupant, within a building, shall have _______ to all overcurrent devices protecting the conductors that are supplying that occupancy.
Ready access (2017 NEC: 240.24(B))
A cord connector that is supplied by a permanently connected cord pendant shall be considered a/an _______.
Receptacle outlet (2017 NEC: 210.50(A))
Where is GFCI protection not required due to safety concerns
Receptacles used to supply equipment where removal of power would introduce a greater hazard shall be permitted to be installed without GFCI protection Industrial laboratories (2017 NEC: 210.8(B)(5) Exception No. 1 to (5))
What is considered to be safety-control equipment that is used in conjunction with electrically controlled household heating and air conditioning?
Remote-control circuits class 1 (2017 NEC: 725.31(A))
For electric-discharge lighting systems of 1000 volts or less, when is it required to provide for thermal protection of a luminaire?
Required: The ballast of a fluorescent luminaire installed indoors Recessed high-intensity luminaires designed to be installed in a ceiling Replacement ballasts of a fluorescent luminaire installed indoors Not required: A ballast that is used in a fluorescent exit luminaire (2017 NEC: 410.130(E) & (F)(1))
Where direct-buried conductors are subject to movement by settlement, these cables shall be arranged in a/an _______ so as to prevent damage to the enclosed conductors.
S loop (2017 NEC: 300.5(J) Informational Note:)
What is the purpose of the Code?
Safeguarding of persons Safeguarding of property Instruction for trained personnel. (2017 NEC: 90.1 (A))
For a device that contains a screw shell, the grounded conductor is attached to the _______.
Screw shell (2017 NEC: 200.10(C) & 410.82(A))
The first fitting after the conduit emerges from the concrete floor at a motor fuel dispenser is a/an _______.
Seal-off (2017 NEC: 514.9(A))
When working with motors that are subject to voltages over 1000 volts, nominal, a circuit breaker's fault-current protection shall _______.
Simultaneously disconnect all ungrounded conductors (2017 NEC: 430.225(C)(1)(a))
If installed, shore power, for boats at a marina, shall be provided by _______
Single receptacles rated not less than 30 amperes (2017 NEC: 555.19(A)(4))
Excluding exceptions, for overhead spans of open conductors not over 1000 volts, nominal, there shall be no more than _______ disconnects per supply grouped in any one location.
Six (2017 NEC: 225.33(A))
Excluding exceptions, the service disconnecting means shall consist of not more than _______ switches mounted in a single enclosure.
Six (2017 NEC: 230.71(A))
For groups of not more than _______ individual showcases, these shall be permitted to be coupled together by flexible cord and separable locking-type connectors with one of the group connected by flexible cord to a permanently installed receptacle.
Six (2017 NEC: 410.59)
Where lighting outlet(s) are installed for interior stairways, there shall be a wall switch at each floor level, and where the stairway between floor levels has _______ an additional wall switch is required.
Six risers or more (2017 NEC: 210.70(A)(2)(3))
The locked-rotor current shall be assumed to be_______ the full load current for small motors not covered by the Tables.
Six times (2017 NEC: 430.110(C)(3))
When performing electrical calculations it is permitted to round to the nearest whole ampere, with decimal fractions _______.
Smaller than 0.5 dropped (2017 NEC: 220.5(B))
Chapters 5, 6 and 7 of the Code apply to _______.
Special occupancies (2017 NEC: 90.3)
For bonding jumpers that are placed around oversized eccentric knockouts, _______ is/are not permitted.
Standard lockouts Permitted: Threadless couplings if made up tight for metal raceways and metal-clad cables Connections utilizing threaded couplings on enclosures if made up wrenchtight Threaded hub connections utilizing threaded couplings on enclosures if made up wrenchtight (2017 NEC: 250.92(B)(1) - (4))
Lighting track shall not be installed in what locations?
Storage battery rooms Where subject to physical damage Where subject to corrosive vapors.(2017 NEC: 410.151(C)(1)(3)(4))
What is permitted when identifying equipment grounding conductors 4 AWG and larger?
Stripping the insulation or covering from the entire exposed length Coloring the insulation or covering green at the termination Marking the insulation or covering with green tape or green adhesive labels at the termination (2017 NEC: 250.119(A)(2)a. - c)
Electrical installations in air-handling ducts shall be made so that the possible spread of fire will not be _______.
Substantially increased (2017 NEC: 300.21)
A legally required standby service shall be _______ through an occurrence within the building served.
Sufficiently separated from the normal main service disconnecting means to minimize simultaneous interruption of supply (2017 NEC: 701.12(E))
Pendant fixtures are permitted to be used in a Class I, Division 1 location if _______.
Supplied by rigid threaded metal conduit with effective means to prevent loosening (2017 NEC: 501.130(A)(3))
A non-power-limited fire alarm circuit's overcurrent protection shall be located on the _______.
Supply side (2017 NEC: 760.45)
Cartridge fuses shall be provided with a disconnecting means on their _______ so that each circuit containing fuses can be _______ from the source of power.
Supply side; independently disconnected (2017 NEC: 240.40)
Which types of luminaires are permitted within the closet of a bedroom?
Surface-mounted luminaires with completely enclosed light sources Recessed fluorescent luminaires LED luminaires identified as suitable for installation within the closet storage space (2017 NEC: 410.16(A)(1) - (3) & 410.16(B))
Chapter 1: General
Tabs: Definitions, Electrical connections (110.14), High-Leg Marking (110.15),Table: Working Spaces (110.26 (A)(1)), Table: Minimun Depth Working Spaces (110.34(A), Access to Manholes (110.75)
Chapter 7: Special Conditions
Tabs: Emergency System Fire Protection (700.10(D)), Listings of Class 2 and Class 3 (725.179)
Chapter 2: Wiring Protection
Tabs: Identifying Grounding Conductors (200.6(A)), GFCI Protection (210.8), Table: Cord-and-Plug Connected (210.21(B)(2)), Island Counter Spaces (210.52(C)(2)), Feeders (215,2(A)(1)), Table: General Lighting (220.12), Table: Lighting Load Demands (220.42), Table Household Dryers (220.54), Table: Household Ranges (220.5), Table Commercial Kitchens (220.56), Optional Calculation Loads (220.82(A)), Table: Optional Calculations (220.84), Festoon Lighting (225.6(B)), Overhead Clearances (225.18), Table: Clearances Over Roadways (225.60), Vertical Clearance Services (230.24(B)), Standard Ampere Ratings (240.6), Objectionable Current (250.6(B)), Portable Generators (230.34(A)), Types of Grounding Electrodes (250.52(A)), Aluminum Grounding Conductors (250.64(A)), Table: Grounding Electrodes (250.66), Table: Equipment Grounding Conductors (250.122)
Chapter 5: Special Occupancies
Tabs: Major Repair Garage (511.2), Table: Motor Fuel Dispensing (514.3(B)(1)), Spray Booths (516.5(C)), Health Care Panelboard Bonding (517.14)
Chapter 6: Special Equipment
Tabs: Sign Disconnects (600.6), Table: Overhead pool Clearances (680.9(A))
Chapter 4: Equipment for General Use
Tabs: Table: Flexible Cord Ampacities (400.5(A)(1)), Alternating Current Snap Switch (404.14), Bathtub & Shower Lights (410,10(D)), Flexible Cords Dishwashers (422.16(B)(2)), Table: Inverse Time Breaker (430.52), Table: Single-Phase Motor (430.248), Table: Three-Phase Motor (430.250), Table: Transformers (450.3(A))
Chapter 3: Wiring Methods and Materials
Tabs: Table: Metric Designators (300.1(C)), Table: Minimum Cover (300.5), Conductor Bending Radius (300.34), Table: Ambient Temperature (310.15(B)(2)(a)), Table: Ampacities of Conductors (310.15(B)(16)), Table: Metal Boxes (314.16(A)), Table: Supports for Rigid Metal (344.30(B)(2)), Table: FMC Conductors (348.22), Table: PVC Spacing Supports (352.30), Table: FMT Bending (360.24(A)), Underfloor Raceway Cover (390.4)
Chapter 9: Tables, Anex E: Types of Construction
Tabs: Table: Radius of Conduit Bend (Chapter 9, Table 2)
Chapter 8: Communications Systems
Tabs: Type CMP and CMR (800.179)
Receptacles that are located within a patient room shall be listed _______.
Tamper-resistant (2017 NEC: 517.18(C))
Which currents resulting from abnormal conditions, such as ground faults, shall not be classified as objectionable current?
Temporary (2017 NEC: 250.6(C))
Busways shall be marked with __________.
The current rating The manufacturer's name The voltage (2017 NEC: 368.120)
The frame of a portable generator is required to be connected to a grounding electrode when ______.
The generator supplies equipment not mounted on the generator (2017 NEC: 250.34(A)(1) - (2))
All heating elements that are rated over one ampere, replaceable in the field, and are part of an appliance shall be legibly marked with ___________.
The manufacturer's part number The ratings in volts and amperes The ratings in volts and watts (2017 NEC: 422.61)
A disconnecting means is used for a hermetic refrigerant motor-compressor. This disconnect shall be selected on the basis of _______.
The nameplate rated-load current or branch-circuit selection current, whichever is greater, and locked-rotor current of the motor-compressor (2017 NEC: 440.12(A))
If, for overcurrent devices rated 800 amperes, or less, the standard overcurrent device rating above the ampacity of the conductors being protected is not available, _______.
The next higher standard overcurrent device rating shall be permitted to be used not to exceed 800 amperes (2017 NEC: 240.4(B)(3))
Type MI cable requires a separate equipment grounding conductor where _______.
The outer sheath is made of steel (2017 NEC: 332.108)
When a ground rod is not able to be in contact with soil for its entire 8 feet because of rock, which installations is approved for this ground rod?
The rod is not to exceed 45 degrees from vertical, or it may be buried in a trench at least 30 inches deep (2017 NEC: 250.53(G))
For circuits supplying lighting units that have LED drivers, the calculated load shall be based on _______.
The total ampere ratings of such units and not on the total watts of the lamps (2017 NEC: 220.18(B))
Capacitors containing more than _______ of flammable liquid shall be enclosed in vaults.
Three gallons (2017 NEC: 460.2(A))
The rating of a fuse, that is required for short-circuit protection of service equipment rated over 1000 volts, nominal, shall not exceed ______.
Three times the ampacity of a conductor (2017 NEC: 230.208)
What is NOT permitted for the support of overhead conductor spans?
Trees/vegetation (2017 NEC: 225.26)
Where NM cable is run at angles with joists in unfinished basements, it shall be permissible to secure cables not smaller than_______ conductors directly to the lower edges of the joists.
Two 6 AWG or three 8 AWG (2017 NEC: 334.15(C))
Which communications plenum cables has both adequate fire-resistance and low smoke-producing characteristics?
Type CMP (2017 NEC: 800.179(A))
Under which construction types is Type NM cable to be installed within a raceway?
Type I and II (2017 NEC: 334.10(5))
Which type of construction consists of three categories: fire-resistive, one-hour rated and non-rated?
Type II (2017 NEC: Informative Annex E Types of Construction)
Which is approved as protection for underground service conductors?
Type IMC, RMC, NUCC, HDPE, PVC, RTRC, ICS, USE, MV, MC, MI (2017 NEC: 230.30(B)(1) - (10))
Which type of construction consists of a single construction category that provides for heavy timber construction?
Type IV (2017 NEC: Informative Annex E Types of Construction)
Within the same cable tray, cables, that are operating at over 1000 volts, shall be _______.
Type MC (2017 NEC: 392.20(B)(1))
Which wiring methods IS permitted under a pool when it is NOT necessary to supply the pool's equipment?
Type MC (2017 NEC: 680.11)
Which wiring methods is permitted within a Class III, Division 1 location?
Type MC, MI, MV, TC, TC-ER Type ITC, ITC-ER Type PLTC, PLTC-ER Type PVC, RTRC, MC, MI (2017 NEC: 503.10(A)(1)(4))
What wiring methods is permitted in a Class II, Division 1 location?
Type MI cable Threaded rigid metal conduit Optical fiber cable (2017 NEC: 502.10(A)(1)(1) - (4))
Excluding exceptions, where an ac system operating at 1000 volts or less is grounded at any point, the grounded conductor(s) shall be routed with the _______.
Ungrounded conductors to each service disconnecting means and shall be connected to each disconnecting means grounded conductor(s) terminal or bus (2017 NEC: 250.24(C))
An enclosure, with a metric threaded hub, is being used in a hazardous location. The conduit has non-metric threads. What should the installer do?
Use a adapter (2017 NEC: 500.8(E)(2))
A room air conditioner is rated over 250 volts. Its wire method includes ____________.
Use of Type RMC Hard-wired Use of Type EMT (2017 NEC: 440.60)
Installations underground, or in concrete slabs, or masonry in direct contact with the earth, or in locations subject to saturation with water or other liquids, such as vehicle wash areas, BEST defines a/an _______ location.
Wet (2017 NEC: 100. Definitions)
When is ground-fault protection of equipment required for a feeder?
When each feeder disconnect is rated 1000 amperes or more; installed on solidly grounded wye electrical systems of more than 150 volts to ground; not exceeding 600 volts phase-to-phase (2017 NEC: 215.10)
When should the ground-fault protection of a service equipment be performed?
When first installed on the site (2017 NEC: 230.95(C))
For a dwelling unit, Arc-Fault Circuit-Interrupter Protection is required in what areas?
Where an individual branch circuit to a fire alarm system installed in accordance with 760.41(B) is installed in RMC, while meeting the requirements of 250.118, with metal outlet and junction boxes. (2017 NEC: 210.12(A) Exception)
Type MI is permitted in which locations?
Where embedded in plaster For power circuits For services (2017 NEC: 332.10(1)(2)(6)& 332.12(1))
When is it permitted to use only the largest load(s), that will be used at one time, when calculating the total load of a feeder or service?
Where it is unlikely that two or more noncoincident loads will be in use simultaneously (2017 NEC: 220.60)
Under which of the installations, is a conduit seal-off NOT required?
Where metal conduit that contains no unions passes completely through a Division 1 location with, no fittings installed within 12 in. of either side of the boundary, and the termination points of the unbroken conduit are located in unclassified locations (2017 NEC: 501.15(A)(4) Exception No. 1)
Alternating-current systems, of less than 50 volts, shall be grounded under which conditions?
Where supplied by transformers, if the transformer supply system exceeds 150 volts to ground. Where installed outside as overhead conductors Where supplied by transformers, if the transformer supply system is ungrounded (2017 NEC: 250.20(A)(1) - (3))
When are expansion fittings for PVC conduit required?
Where the length change is expected to be 1/4 in. or greater (2017 NEC: 352.44 & 378.44)
Service entrance conductors not over 1000 Volts, Nominal, shall be installed in which types of wiring methods _______.
Wireways Type IGS cable Opening wiring on insulators (2017 NEC: 230.43(1) - (19))
A floor mounted receptacle shall not be counted as part of the required number of receptacle outlets unless it is located _______ of the wall.
Within 18 in (2017 NEC: 210.52(A)(3))
Excluding exceptions, the disconnect supplying a sign shall be located _______ from the sign.
Within 50 ft (2017 NEC: 600.6(A)(2))
Excluding exceptions, all conductors of the same circuit and, where used, the grounded conductor and all equipment grounding conductors shall be contained _______.
Within the same trench, raceway, cable tray, or other conduit (2017 NEC: 300.3(B))
Ground clamps, exposed to physical damage, shall have a protective covering made of?
Wood Metal Other approved materials (2017 NEC: 250.10)
For impedance heating, the ampacity of the conductors connected to the secondary of the transformer shall be _______ of the heater.
at least 100 percent of total load (2017 NEC: 427.30)
If no tools are required to open a manhole, this manhole's round cover is to weigh over _______.
over 100 pounds (2017 NEC: 110.75(D))
