NEC Commercial Electrical Test #1
The word Approved means acceptable to the ________ . (100 definitions)
Authority Having Jurisdiction
Except in a case of a concrete encased driven or buried grounding electrode, the connection of a grounding electrode conductor to a grounding electrode shall be ________. (250.68 Grounding Electrode Conductor & Bonding Jumper Connection to Grounding Electrode / A. Accessibility)
accessible
The following shall be used only for the grounded circuit conductor: Where a cable assembly contains an insulated conductor for single-pole, 3-way or 4-way switch loops and the conductor with ______ insulation color shall be used. 200.7 C 1
white or gray
Where a cable or raceway type wiring method is installed through bored holes shall be bored so that the edge of the hole is not less than _____ inches from the nearest edge of the wood member. (300.4 Protection Against Physical Damage / A. Cables and Raceways Through Wood Members / 1. Bored Holes)
1 1/4 inches
Recessed portions of Non-type IC lighting fixtures enclosures, other than at points of support shall be spaced at least ______ inches from combustible material. (410.116 A 1)
1/2 inches
In damp and wet locations, to prevent moisture or water from entering with the cabinet or cutout box and shall be mounted so there are at least ______ inch airspace between the wall and outer supporting surface. (312.2)
1/4 inch
For permanently connected appliances rated at not over ________ horsepower, the branch-circuit over-current device shall be permitted to serve as the disconnecting means. (422.31 Disconnection of Permanently Connected Appliances.)
1/8 horsepower (300 volt-amperes)
In dwelling units, hallways of ______ feet or more in length shall have at least one receptacle outlet. (210.52 Dwelling Unit Receptacle Outlets / H. Hallways)
10 feet
In no case shall the point of attachment for overhead service-drop conductors be less than _____ feet above finished grade. (230.26 Point of Attachment)
10 ft
The point of attachment of 120/240 volt service drop conductors to a building shall provide above finished grade of at least ______ feet. (230.26 Point of Attachment)
10 ft
Where the length of the tap conductors does not exceed _____ feet and the tap conductors comply with the ampacity of the tap conductors. (240.21)
10 ft
In a dwelling unit, where additional A/C equipment is required calculated load of the first 8 KVA requires a minimum _______ amp service. (220.83 A table)
100 (first) 40 (remainder of load)
Show window shall have at least one receptacle outlet installed directly above a show window for each _____ feet or major fraction thereof of show window area measured horizontally at its maximum width. (210.62)
12 ft
The vertical clearance from ground for service drop over residential property and driveways, and those commercial areas not subject to truck traffic is _______ feet where the voltage does not exceed 300 volts to ground. (230.24 2)
12 ft
Dry-type transformers exceeding 112 1/2 KVa shall not be located within _______ inches of combustible of building unless the transformer has a class 155 insulation system or higher. (450.22)
12 inches
Surface mounted incandescent luminaries installed on the wall above the door in a closed closet ceiling must have a clearance between the fixtures and the nearest point of a storage area of at least _____ inches. (410.16 Luminaires in Clothes Closets / C. Location)
12 inches
Surface-mounted incandescent luminaries (fixtures) installed on the wall above the door or on the ceiling in clothes closets shall have a minimum clearance of _____ inches between the luminaire and the nearest point of storage. (410.16 Luminaries in Clothes Closets / C. Location / 1.)
12 inches
Circuit breakers used as switches in a florescent lighting circuit shall be listed, shall be marked SWD + HID and with a maximum of ______ volt.
120 volt
In dwelling units and guest rooms of hotels, motes. and similar occupancies, the voltage shall not exceed _____ volts. 210.6 A
120 volts
The load of a single motor on its branch circuit conductors shall not exceed a maximum of _______ percent of the conductor ampacity. (430.22 Single Motor)
125 %
The clearance to amusement ride and attractions shall be maintained not less than _____ feet in any direction from overhead conductor operating at 600 volts or less. 525.5 b 1
15 ft
A load of not less than ______ volt-amperes shall be included for each 2-wire laundry branch circuit installed as required. (220.52 Small-Appliance and Laundry Loads - Dwelling unit / B. Laundry Circuit Load)
1500
For a dwelling unit, the minimum size aluminum service entrance conductor permitted for a 100 amps service is ________ awg. (Table 310.15 B 7 )
2 awg
The volume allowance required for each 14 awg conductor, when calculating box fill, shall be _____ cubic inches. (Table 314.16 B Volume Allowance Required per Conductor)
2 cu. in.
The sum of the cross-sectional areas of all the contained conductors at any cross-section of an auxiliary gutter shall be a maximum of ______ percent of the interior cross-sectional are of the gutter. (366.22 A)
20 %
All 125-volts receptacles located within ____ feet of the inside wall of a pool or fountain shall be protected by a grounding-fault circuit interrupter. 680.22 4
20 ft
Electrodes of pipe or conduit shall not be smaller than metric designator ____ and, where of iron or steel, shall have the outer surface galvanized or otherwise metal-coated for corrosion protection. (250.52 A 5)
21 (trade size 3/4)
For equipment rated 1200 amperes or more and over 6 feet wide that contain over-current devices, there shall be one entrance not less than ______ inches wide and ______ feet high at each end of the working space. (110.26 Spaces About Electrical Equipment / C. Entrance to and Egress from Working Spaces/ 2. Large Equipment.)
24 in wide, 6 1/2 ft high
For industrial installations only, where the length of the secondary conductors does not exceed _____ feet and complies with all of the following: the ampacity of the secondary conductors is not less than the secondary conductors is not less than the secondary current rating of the transformer. (240.21 C 3 2)
25 ft
The minimum clearance of service conductors which are installed as open conductors, from windows, doors, porches, fire escapes and similar locations is ______ feet. (230.9 Clearances on Bldgs / A. Clearances)
3 feet
The minimum depth of working space at electrical equipment over 600 volts is ______ feet. Table 110.34 A
3 ft
The length of cord for built-in dishwashers and trash compactors shall not be less than ______ feet and not over ______ feet. (422.16 Flexible Cords / B. Specific Appliances / 2. Built-in Dishwashers and Trash Compactors / 2.)
3 ft. (min) 4 ft. (max)
A continuous load is a load where the maximum current is expected to continue for ______ hours or more. (100 definitions)
3 hours
Except for specially designed recessed fixtures, thermal insulation is not permitted within ______ inches of a lighting fixture, enclosure, wiring compartment or ballast. (410.116 B)
3 inches
The maximum rating of a branch circuit for a flat cable (FC) assembly installed in a surface metal raceway is _______ ampere. (322.2 II 322.10 1)
30 amp
The minimum dimension of working space directly in front of a 12 inch wide panel board which operates at less than 600 volt is ____ inches wide. (110.26 Space About Electrical Equipment / A. Working Space / 2. Width of Working Space
30 inches
Secondary circuits of current and potential instrument transformers shall be grounded where the primary windings are connected to circuits of at least ______ volts or more to ground. (250.170)
300 volts
Ceiling-suspended (paddle) fans exceeding _____ pounds in weight, with or without accessories, shall be supported independently of the outlet box. (314.27 Outlet Boxes / C. Boxes at Ceiling-Suspended (paddle) Fan Outlets.)
35 lb.
Feeders with common neutral may serve a maximum of two sets of ________ wire feeders shall be permitted to utilize a common neutral. (215.4)
4
Nonmetallic-sheathed cable shall be secured by staples, cable ties, straps, hangers or similar fitting at intervals not exceeding ____ feet and within _____ inches of every cabinet, box or fitting. (334.30 Securing and Supporting)
4 1/2 feet & 6 inches
A non-metallic cables shall be secured at intervals not exceeding _____ feet and within _____ inches of the box. (334.30 Securing and Supporting)
4 1/2 ft 12 in
In floors of transformer vaults in contact with earth shall be of concrete with a minimum thickness of at least ______ inches. (450.42)
4 inches
Busways shall be securely supported at intervals not exceeding _____ feet. (Article 368 Busways / 368.30 Support)
5 feet
Sheet metal auxiliary gutters shall be supported throughout their entire length at maximum intervals of ______ feet. (366.30 Securing and Supporting / A. Sheet Metal Aux. Gutters)
5 feet
Interior metal water piping located more than _____ feet from the point of entrance to the building shall not be used as part of the grounding electrode system. (250.68 Grounding Electrode Conductor & Bonding Jumper Connection to Grounding Electrode /c. Metallic Water Pipe & Structural Metal.)
5 ft
Where the maximum total voltage drop on both feeders and branch circuits to the farthest outlet from exceeding ________ percent. (210.19 A 1)
5%
A luminaire (lighting fixture) that weighs more than _____ pounds shall be supported independently of the outlet box. (314.27 Outlet Boxes / A. Boxes at Luminaire / 2. Ceiling Outlets)
50 pounds
The maximum weight of a lighting fixture supported by an outlet box shall be _______ pounds. (314.27 Outlet Boxes / A. Boxes at Luminaire / 2. Ceiling Outlets)
50 pounds
A domestic clothes dryer branch circuit shall have its minimum load figured at ______ watts or the nameplate rating, whichever is larger. (220.54)
5000
For a wye-start, delta-run connected motor the selection of conductors between the controller and motor shall be based on _____ percent of the motor full-load current. (430.22 C Informational note)
58
Interior stairs shall have switches at each end, where the stairway between floor levels has _____ risers or more. (210.70 Lighting Outlets Required / A. Dwelling Units / 2. Additional Locations / c.
6
In an existing dwelling, the minimum headroom clearance required above a 200 amp panel board is _______ feet. (110.26 A 3)
6 1/2 ft
The minimum headroom required in front of a motor control center shall be ____ feet (110.26)
6 1/2 ft
Electrode spacing where more than one electrodes are used, each electrode of one grounding system shall not be less than _____ feet any other electrode of a grounding system. (250.53 B)
6 ft
The dedicated electrical space above a motor control center shall be _________ feet or to the structural ceiling whichever is lower. (110.26 E 1)
6 ft
All luminaries (fixture), weighing more than ______ pounds or exceeds 16 inches in any dimension shall not be supported by the screw shell of the lamp-holder. (410.30 Supports / A. General)
6 lb
U pulls or angle pulls are made in a junction box, the distance between each raceway entry inside the box and the opposite wall of the box shall not be less than ______ times. (314.28 A 2)
6 times
Termination provisions of equipment for circuits rated at 100 amperes or less shall use only one of the following _________ ampacity of the conductor size. 110.14 c 1
60*C
Enclosure for electrical installations shall have a fence when used outdoors to deter access by persons who are not qualified and the fence shall not be less than _____ feet. 110.31
7 ft
Overhead service-drop conductors shall not be smaller than _____ awg copper. (II. Overhead Service Conductors / 230.23 Size & Rating / B. Minimum Size)
8 awg copper
Live parts of electrical equipment operating at 50 volts or more shall be guarded against accidental contact by elevation of ______ feet above the floor or other working surface. 110.27 A 4
8 ft
Overhead service-drop conductors shall have a vertical clearance of not less than _____ feet above the roof surface. (II. Overhead Service Conductors / 230.24 Clearances / B. Vertical Clearance for Overhead Service Conductors)
8 ft
Where nonmetallic or metal-enclosed equipment is accessible to the general public and the bottom of the enclosure is less than ______ feet above the floor or grade level, the enclosure door or hinged cover shall be kept locked. 110.32 D
8 ft
Elevation of unguarded live parts above working space over 600 volts shall have ______ feet. Table 110.34 E
9 ft (108")
The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating is defined as _______. (100 definitions)
Ampacity
A branch circuit that supplies only one range could be defined by the code as all of the following, except _______ branch circuit. (100 definitions)
appliance, individual or general purpose NOT multi-wire
Conductors that are intended for use as an ungrounded conductor shall be _____ in color.
black
Bends in types NM, NMC, and NMS cables shall be made so that the cable will not be ______ . (334.24 Bending Radius)
damaged
This CODE covers the installation of electric conductors, installations used by the ________ utility. (90.2 A 4)
electric
An INSULATED conductor is one that is _______ within material of composition. 100
encased
Steel or iron pipe grounding electrode shall be protected from corrosion by _________ protection. (250.52 A 5 a)
galvanizing
Which 125-volt single-phase 20-amp receptacles located in a dwelling unit garage are required to have a ground fault circuit interrupter installed? (210.8 GFCI Protection for Personnel)
garage receptacles work areas
Except where otherwise allowed switches or circuit breaker shall not disconnect a the _______ conductor of the circuit. (404.2 Switch Connections / B. Grounded Conductors)
grounded
In a room containing a 480 volt switchboard, a masonry wall opposite the front of the switchboard is considered to be _______________. Table 110.26 A 1 Condition 2)
grounded
Lighting fixtures located in areas subject to moisture or dampness, such as roofed open porches, shall be _______ . (410.10 A)
marked as suitable for use in wet or damp locations
A load where the wave shape of the steady-state current does not follow the wave shape of the applied voltage. 100
non-linear
Where a single made rod, pipe, or plate electrode has less resistance to ground than 25 ohms, __________. (250.53 A 2 exception)
one additional electrode shall be installed
A 4-wire, delta-connected secondary feeder, the phase conductor with the higher voltage to ground identified with outer finish of _____ or be tagged. (110.15)
orange
Receptacles incorporating an isolated grounding connection shall be identified by an ______ triangle located on the face of the receptacle. (406.3 Receptacle Rating and Type / D. Isolated Ground Receptacle)
orange
In Class 1, Division 2 location where a motor is used, space heaters are used during shutdown periods to ________. (501.125 Motors & Generators / B. Class I, Division 2)
prevent condensation
An enclosed channel of metal or nonmetallic materials designed expressly, with additional functions as permitted in this code. (100 Definitions)
raceway
Conductors installed in subsurface enclosures into which persons enter for installation and maintenance shall be ______. (110.74)
racked
Branch circuits shall be ______ in accordance with the maximum permitted ampere rating or setting of the over-current device. (210.3 Rating)
rated
Where the number of current-carrying conductors in a raceway or cable, when it exceeds the allowable ampacity of each conductor it shall be ______. (see Table 310.15 b 3 a when # of conductors increase the ampacity decreases or 310.15 / B. Tables / 3. adjustment factor)
reduced
No grounded conductor shall be attached to any terminal or lead so as to _____ the designated polarity. (200.11 Polarity of Connections)
reverse
The purpose of this CODE is the practical ______ of persons and property from hazards arising from the used of electricity. 90.1
safeguarding
Where more than on nominal voltage system exists in a building, each un-grounded conductor of multi-wire branch circuit, where accessible, shall be identified by _________ . 215.12 C
separate color coding
The overhead service conductors from the last pole or other aerial support to and including the splices, if any, connecting to the service-entrance conductors at the building or other structure. (100 Definitions)
service conductor
The sign shall be placed at the _____ indicating type and location of on site emergency power sources. (700.7 A)
service entrance equipment
The connection of a grounding electrode conductor or bonding jumper to a grounding electrode ____ accessible. (250.68 Grounding Electrode Conductor and Bonding Jumper Connection to Grounding Electrodes / A. Accessibility)
shall be
Branch circuits required for the purpose of lighting, central alarm, signal, communications, or other needs for public or common area of a two family or multifamily dwelling ______ supplied from equipment that supplies an individual dwelling unit. 210.25 B
shall not be
Electrical equipment _______ used wooden plugs in masonry, concrete, plaster or similar material. 110.13
shall not be
EMT smaller than ______ inch shall not be used. (Article 358 type EMT / 358.20 size)
trade size 1/4 (metric designator 16)
When plate electrodes are used for grounding, each electrode shall be exposed a minimum of _____ of surface to exterior soil. (250.52 A 7)
two square feet (2 sq.ft.)
This CODE does not cover the following installations ___________ . 90.2 B 2
underground mines
In dwelling units, a multi-wire branch circuit supplying more than one device or equipment on the same yoke shall provide with a means of disconnect simultaneously all _______ conductors at the panel-board. 210.7
ungrounded
Receptacles installed outdoors in a wet location shall have an enclosure that is _______ whether or not the attachment plug cap is inserted. (406.9 Receptacles in Damp or Wet Locations / B. Wet Locations / 2. / b.
weatherproof
Receptacles, plugs and connectors shall have the terminal intended for connection to the grounded conductor identified as _________. 200.9 Means of Identification of Terminals
white
Where the conditions of maintenance and supervision ensure that only qualified persons service the installation, grounded conductors in multi-conductor cables shall be permitted to be permanently identified at their terminations at the time of installation by a distinctive ______ color marking. 200.6 E
white
The minimum size of the electrical flexible metal conduit (FMC) is _____ inches electrical trade size. 348.20
1/2 in
In walls or ceiling with a surface of concrete, tile, gypsum, plaster, or other non-combustible material, boxes shall be installed so that the front edge of the box will not be set back of the finished surface more than ____ inch. (314.20 In Wall or Ceiling)
1/4 inch
Individual open conductors and cables, other than service entrance cables, shall have a minimum clearance above grade level of at least ______ feet. (225.18 Clearance for Overhead Conductors and Cables / 1.)
10 feet
When a metal underground water pipe is used as a grounding electrode, the pipe shall be electrically continuous and in direct contact with the earth for at least _______ feet. (250.52 Grounding Electrode / A. Electrodes Permitted for Grounding / 1. Metal Underground Water Pipe)
10 feet
A phase converter used to supply variable loads shall have conductors on the single phase supply rate at not less than _______ percent of the phase converter nameplate single phase input full load amperage. (455.6 Conductors / A. Ampacity /1. Variable Loads)
125 %
In each dwelling unit, the load shall be computed at ______ volt-amperes for each 2-wire small-appliance branch circuit required. (220.52 Small-Appliance and Laundry Loads - Dwelling unit / A. Small-Appliance Circuit Load)
1500
Sizing of small appliance two wire circuits in dwelling units shall be based on a minimum of ______ volt amperes per each circuit. (220.52 Small-Appliance & Laundry Loads-Dwelling Units / A. Small-Appliance Circuit Load)
1500 volt-amperes
The maximum rating of any one cord-and-plug connected portable appliance used in a 20-amp branch circuit would supply two or more outlets with ______ amperes. Table 210.21
16 amps
Where used outside, aluminum or copper-clad aluminum grounding conductors shall not be terminated within ____ inches of the earth. (250.64 Grounding Electrode Conductor Installation / A. Aluminum or Copper-Clad Aluminum Conductors)
18 in
Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlet unless located within ______ inches of the wall. (210.52 Dwelling Unit Receptacle Outlets / A. General / 3. Floor Receptacle)
18 inches
Underwater lighting fixtures mounted in swimming pool walls shall be installed with the top of the fixture lens below the normal water level of the pool at least _____ inches. (680.23 A 5)
18 inches
The length of cord for electronically operated kitchen waste disposers shall not be less than ______ inches and not over ____ inches. (422.16 Flexible Cords / B. Specific Appliances / 1. Electrically Operated Kitchen Waste Disposers)
18 inches (min.) 36 inches (max.)
Counter-top receptacles outlets installed in residential kitchens shall be supplied by at least ______ small appliance branch circuits. (210.52 Dwelling Unit Receptacle Outlets / B. Small Appliance / 3. Kitchen Receptacle Requirements)
2
A required 125-volt, 15-and 20-ampere receptacle in dwelling units shall be installed in any wall space _____ feet or more in width. (210.52 Dwelling Unit Receptacle Outlets / A. General / 1. Wall Space)
2 feet
Except where otherwise allowed, non-metallic raceways are permitted to be used for fixing wiring in a theater if the raceways are encased in at least _____ inches of concrete. (520.5)
2 inches
Given switchboards and control panels rated 1200 amps or more and which are over six feet wide shall have at least one entrance at each end of a work space area to give access to the electrical equipment. Each access to the switchboards and control panels shall have a minimum width of at least _______ inches. (110.26 C 2)
24 inches
Plate electrodes shall be exposed not less than _____ inches below the surface of the earth. (250.52 Grounding Electrodes / A. Electrodes Permitted for Grounding / 7. Plate Electrodes)
24 inches (2 ft)
One receptacle outlet shall be installed at an accessible location for the servicing of heating, air-conditioning, and refrigeration within ______ feet and on the same level as the equipment. (210.63 Heating, Air-Conditioning, and Refrigeration Equipment Outlet)
25 ft
When heating and air conditioning equipment is located on the rooftop of a bank, a single phase 15 or 20 amp receptacle outlet shall be located on the same level within ______ feet from the equipment. (210.63 Heating, A/C and Refrigeration Equipment Outlet)
25 ft
No parts of cord-connected luminaries (fixtures), hanging luminaries, lighting track, pendants, or ceiling-suspended (paddle) fans shall be located wihtin a zone measured ____ feet horizontally and _____ feet vertically from the top of the bathtub rim or shower stall threshold. (410.10 Luminaires in Specific Locations / D. Bathtub and Shower Areas)
3 feet (horizontally) and 8 feet (vertically)
No part of a cord connected pendant fixture shall be installed in a zone over and within _______ feet horizontally and 8 feet vertically from the top of the bathtub rim. (410.10 D)
3 ft horizontal 8 ft vertical
Thermal insulation shall not be installed above a recessed luminaire (fixture) or within _____ inches of the recessed luminaire's(fixture's) enclosure, wiring compartment, or ballast unless it is identified for contact with insulation, for not-Type IC. (410.116 Clearance and Installation / B. Installation)
3 inches
Not more than _______ over-current devices of a lighting and appliance branch-circuit panel-board shall be installed in any one cabinet or cutout box. (408.36 Overcurrent Protection / exception #2)
42
The phrase "in sight from" specifies that one piece of equipment shall be visible and not more than _____ feet in distance from the other. (100 definitions)
50 ft
The load for house hold electric clothes dryers in a dwelling unit(s) shall be ________ watts (volt-amperes) or the nameplate rating, whichever is larger, for each dryer served. (220.54 Electric Clothes Dryers - Dwelling Units)
5000
Where the supplemental electrode is a rod, pipe or plate electrode, that portion of the bonding jumper that is the sole connection to the supplemental grounding electrode shall not be required to be larger than ____ awg copper wire. (250.53 Grounding Electrode System Installation / E. Supplemental Electrode Bonding Connection Size.)
6 awg copper
Appliances receptacle outlets installed in a dwelling unit for specific appliances, such as laundry equipment, shall be installed within _______ feet of the intended location of the appliance. (210.50 General / C. Appliance Receptacle Outlets)
6 feet
Equipment bonding jumpers, when installed outside of a raceway shall have a maximum length of _____ feet. (250.102 Bonding Conductors and Jumpers /E. Installation / 2. Outside a Raceway or an Enclosure)
6 feet
In an attic which is not accessible by permanent stairs or ladders, non-metallic sheeted cable run over the tops of joints must be protected where it is installed within _____ feet of the attic shuttle hole. (320.23 In Accessible Attics / A. Cables Run Across The Top of Floor Joists - 7ft accessible / 6ft non-accessable space)
6 feet
Required 125-volt, 15-and 20-ampere receptacles in dwelling units shall be installed so that at no point measured horizontally along the floor line in any wall space is more than ______ feet from a receptacle outlet. (210.52 Dwelling Unit Receptacle Outlets / A. General / 1. Spacing)
6 feet
All switches and circuit breaker used as switches shall be located so the operating handle, when in its highest position, is not more than ____ feet _____ inches above the floor or working platform. (404.8 Accessibility and Grouping / A. Location)
6 feet 7 inches
The space equal to the width and depth of equipment and extending from the floor to the height of _______ feet above the equipment or to the structural ceiling whichever is lower, shall be dedicated to the electrical installation.(110.26 Spaces About Electrical Equipment / E. Dedicated Equipment Space / 1. Indoor / a)
6 ft
At least _____ inches of free conductor shall be left at each outlet, junction, and switch point for splices or the connection of luminaries or devices. (300.14 Length of Free Conductors at Outlets, Junctions, and Switch Points)
6 inches
At least ______ inches of free conductor, measured from the point in the box where the wires emerge from the cable sheets, shall be left at each outlet form the connection of fixtures or devices. (300.14)
6 inches
Rod and Pipe electrodes shall not be less than _____ feet in length. (250.52 Grounding Electrodes / A. Electrodes Permitted for Grounding / 5. Rod and Pipe Electrodes)
8 ft
The insulation of the conductors within type NM cable shall be rated at ________ *C. (334.112)
90*C
The identification of terminals to which grounded conductor is to be connected shall be substantially ______in color. (200.9 Means of Identification of Terminals)
White
Portable signs in wet locations shall have _____ . (600.9 Locations / 2. Ground-Fault Circuit Interrupter)
a ground fault circuit interrupter protection for personnel
Circuits leading to or through gasoline dispensing equipment shall have __________. (514.11)
a means to disconnect all conductors including the neutral
A device designed to open and close a circuit by non-automatic means and to open the circuit automatically on a pre-determined over-current without damage to itself when properly applied within its rating is defined as a _____. ( 100 Definitions)
circuit breaker
Where screw shell type lamp holders that are supplied by a circuit having a grounded conductor, the ______ conductor shall be connected to the screw shell. (410.90 Screw shell type)
grounded (neutral/white)
Receptacles installed on 15- and 20-ampere branch circuits shall be of the ______ type. (406.4 General Installation Requirements / A. Grounding Type)
grounding
The B phase shall be that phase having the _____ voltage to ground on 3-phase, 4 wire, delta-connected system. (408.3 Support and Arrangement of Busbars and Conductors / E. Phase arrangement)
higher
A single panel or group of panels units designated for assembly in the form of a single panel, including buses and automatic over-current devices, and equipment with or without switches for the control of light, heat or power circuits. (100 Definitions)
panel-board
Flexible cords and cables _______ run through holes in walls, structural ceiling, suspended ceilings, dropped ceilings, or floors. (400.8 Uses Not Permitted / 2)
shall not
Service conductors supplying a building or other structure ______ pass through the interior of another building or other structure. (230.3 One Bldg or Other Structure Not to Be Supplied Through Another)
shall not
A fuse or an over-current trip unit of a circuit breaker shall be connected in series with each _______ conductor. (240.15 Ungrounded Conductors / A. Overcurrent Device Required)
ungrounded
Three way and four way switches shall be so wired that all switching is done only in the ______ circuit conductor. (404.2 Switch Connections / A. 3way & 4way switches)
ungrounded
On electrical devices, the terminal to which grounded conductor is to be attached shall be substantially ________ in color. (200.9)
white
