Code Test
unused openings other than those intended for the operation of equipment, intended for mounting purposes, or permitted as part of the design for listed equipment shall be?
closed to afford protection substantially equivalent to the wall of the equipment
a load where the maximum current is expected to continue for 3 hours or more is known as?
continuous load
the continuity of the equipment grounding conductors used to reduce electrical shock hazards at carnivals, circuses, fairs and similar events shall be verified
each and every time the portable electrical equipment is connected
in other than feeling units all 125 volt 15 and 20 amp recepticales installed in kitchens shall be GFCI protected
false
the insulated grounded conductor of 6 awg or smaller shall be identified by what color
grey / white
which of the following is true regarding meeting room receptacles?
if one floor receptical is required, it must be located within 6 ft of the wall
for equipment rated more than 60 amps or more than 150 volts to ground, the disconnecting means shall be provided and installed ? for an electric vehicle charging system
in a readily accessible location
switch boards and panel boards containing high leg systems are required to be?
legible and permanently field marked
automatic operated doors used for building egress in health care facilities shall be supplied from the branch emergency system
life safety
there shall be no reduction in the size of the neutral or grounded conductor on ? loads supplied from a 4-wire, wye-connected, the phase system
noon-linear
a feeder splint fixed motor loads shall have a protective device with a rating or setting ? branch-circuit short-circuit and ground fault protective device for any motor in the group, plus the sum of the full load currents of the other motors of the group
not greater than the largest rating or setting of the
in an underground mine one 125 volt 20 amp dedicated emergency circuit shall be located within ? get off entrance
not in NEC
what is the minimum wire bending space at the terminals of enclosed motor controllers if 8awg copper is used?
not specified
there high leg marking on a 4 wire delta connected system shall be ? color?
orange
a rule that is characterized by the use of the terms shall be permitted or shall not be required use which of the following?
permissive rule
one who has skills and knowledge related to construction and operation of the electrical equipment, installation and it's received safety training on the hazards involved is defined in there NEC as ?
qualified person
when an outlet from an underground raceway is discontinued, the circuit conductors supplying the outlet
shall be removed from the raceway
insulated conductors and cables used where exposed to direct rays of the sun shall be off the type listed for sunlight resistance or listed and marked ?
sunlight resistant
luminaries and equipment must be mechanically connected to an equipment grounding conductor as specified in 250.118 and must be sized in accordance with?
table 250.112
the purpose of this code is which of the following
the practical suggesting of persons and property of hazards arising from the use of electricity
a ? is used to protect the motor from overloaded and starting failures
thermal protector (heater)
a receptacle supplying only a permanently installed fire pit burglar alarm system in unfinished basement shall not be required to have GFCI protection
true
all recepticales located within the patient care area of pediatric wards, room or other shall be listed tamper resistant or shall employee a list tamper resistant cover
true
for box fill calculations, a looped, unbroken conductor not less than twice the minimum length required for free conductors shall be counted twice.
true
for ground fault protection guest rooms and guest suites that are provided with permanent provisions for coming shall have branch circuit and outlets installed to meet the rules for dwelling units
true
on a dwelling units arc-fault circuit protection is required on closet outlets
true
receptacles installed in "appliance garages" above the kitchen countertop, which are not really accessible, shall not count as the required countertop outlets
true
the NEC does not cover which of the following
underground mines
what is the maximum number of NM cables containing two or more current carrying conductors installed, without maintaining spacing between cables, through the same opening in wood framing that is to be sealed with thermal insulation, caulk or sealing form
4
type NMC cable shall be supported and secured at intervals not exceeding ? ft and within ? in of every outlet
4.5 and 12
what is the demand factor for 18 households electric clothes dryers?
40%
a continuous load of 175 kva at 480 volts 3 phase would be ? amps
455
electric panel boards of 480v, with exposed live parts on both sides of the working space, shall have a minimum depth off working space clearance of ?
4ft
which electrical code panel is in charge of article 250
5
momentary rating on x-ray equipment is based on operating internally that does not exceed ?
5 min
type HDPE high density polyethylene condos shall not be used where subject to ambient temperature in excess of ? unless listed otherwise
50 c
to be considered "in sight form" the specified equipment shall be visible and both more than ? distant from the other
50 ft
article ? covers the installation of portable wiring and equipment for carnivals, circuses, exhibitions, fairs, traveling attractions, and similar functions
525
what is the full load current amps from a 15 HP, 240 volt, DC motor
55
in a closet storage space, surface mounted florescent luminaries can be installed on the wall above the door or on the ceiling, provided there is a minimum clearance of ? inches between the luminaries and the nearest point of storage space
6
without exception the minimum headroom of working spaces about service equipment shall be
6 1/2 ft
where a permanently installed pool is installed at a new dwelling unit no fewer than one 125 volt 15 or 20 amp receptacle on a general purpose branch circuit shall be located not less than from and not more than from the inside wall of the pool
6 and 20 ft
grounding electrode conductors, smaller than ? where exposed to physical damage, shall be in rigid conduit, IMC, SCH-80 PVC conduit, electrical metal tubing or cable armor
6 awg
where the class 1, division 1 location boundary in below grade, a sealing fitting shall be permitted to be installed ?, and here must not be any unions, couplings, boxes, or fittings between the sealing fitting and the and the frame, other than listed explosion proof reducers.
after the conduit emerges from the grade
without exception, all 126 volt single-phase 15 and 20 amp receptacles in dwelling units supplying ? are required to have GFCI protection
all of the above
manhole covers shall be over which of the following weights or otherwise designed to require the use of tools to open
100lb
which of the following is not a standard size circuit breaker or fuse?
10amp
a hallway in a dwelling requires a receptacle when ? ft or longer
10ft
outlet boxes designed to enclose a flush device must have a minimum depth of?
15/16
a motor disconnect of 1000v or less shall be rated ?% of the full load rating of the motor.
115%
all electrical connections not intended for operation while submerged and artificially made bodies of water shall be located at least ? above the deck of a floating or fixed structure, but not below the electrical datum plane
12
type SE cables for a service riser shall be supported within ? inches of the weather head and at ? inch intervals
12 and 30
the service drop of 300 volts over a residential driveway must have a minimum clearance of
12 ft
wall counter spaces in a dwelling shall have a receptacle installed when the counter space is ? or wider
12 in
for large equipment rated at ? or more and over ? wife that contains over current devices or control devices, there shall be an entrance to and egress from the required working space not less than ? wife and ? high at each end of the working space
1200 amps, 6 ft, 24 in, 6 1/2 ft
conductors that supply a single motor used in a continuous duty application shall have an ampacity of not less than ? percent of the motor full load current rating.
125
which is the ampacity of four current carrying 1/0 THHN conductors in a raceway
136 amp
conductors in rigid metal conduit under a building have cover requirements of inches
0
boxes that enclose utilization equipment supplied by 12 or 10 awg conductors shall have an internal depth that is not less than?
1 3/16 in
a 350amp over current device tiered a minimum equipment grounding conductor size ? aluminum
1 awg
a feeder of 480v had over current protection of 800 amps, what size Cooper conductor is required for the equipment ground?
1/0 awg
without exceptions, the smallest conductor allowed to be paralleled is ?
1/0 awg
the equipment grounding terminal buses of the normal and essential branch circuit panel boards serving the same individual patient vicinity shall be bonded together with insulated continuous conductors not smaller than a ? awg
10
what is the allowable ampacity rating for #18 types of SO cord when two conductors are carrying current
10 amps
the largest solid conductor allowed to be installed on a raceway is ? awg
10 awg
aluminum or copper clad conductors used for grounding conductor shall not terminate ? within inches of the earth
18
in other than dwelling units, receptacle loads shall be completed at not more than ? per outlet
180 volt amps
a 200 amp feeder installed in SCH-80 rigid nonmetallic conduit had three 3/0 THHN conductors, one 2 THHN conductor, and one 6 THHN conductor. what size trade raceway is required?
2
each patient need in critical care areas of a healthcare facility shall be supplied by at least ? branch circuit
2
field cell systems are now recognized for use as a source of power for emergency and legally required standby systems. the fuel cell system shall be off suitable rating and capacity to supply she's maintain the total load not less than ? hours of full demand
2
the electrical service is considered outside the building when installed not less than ? of concrete beneath a building
2 in
what is the volume allowance required as 12 awg conductors when calculating box fill?
2.25 cu in
branch circuits that supply signs and outline lighting systems containing incandescent and florescent forms of illumination shall be rated not to exceed ? amps
20
SJTO cord 12 awg with three conductors is approved for ? amps
20 amps
the power supply cord for a mobile home cannot be less than ? ft from cord plug cap to the point where it enters the mobile home
20 ft
what is the demand factor for services and feeders for 41 mobile homes
23%
SJO cord is too be marked, on there cord, at intervals not to exceed?
24 in
what is the minimum cover requirement for the conductors in rigid metal conduit under a parking lot?
24 in
exposed non current carrying metal parts of a PV module frames, electrical equipment, and conductors enclosures of PV systems shall be grounded in accordance with ? regardless of voltage
250.134 and 250.136
what is the minimum EMT pipe size for the following conductors 4-500 kcmil THHN 3-2/0 XHHW and #4-6 THHW? all current carrying conductors
3 1/2 in
a ground ring shall be buried at a depth below the Earth's surface of not less than?
30 in
a conductor size of 350 kcmil THHW 75 degree copper passing through an area of 36c ambient temperature, what would the ampacity be?
310 amps
outlet boxes designed to support ceiling suspended paddle fan that weigh more than ? pounds shall be required to have a marking that includes there maximum weight to be supported
35
the working space fort condition 1 (600-1000) v would be ? in front of the electrical panel
36 in
luminaries, light tracks, pendants, or ceiling suspended paddle fans shall not be located within a zone measured horizontally and vertically from to of bathtub room or shall stand threshold
3ft and 8ft
where conduit or tubing nipples having a maximum length not to exceed 24" are installed between boxes, cabinets, or similar enclosure, the nipples shall be permitted to be filled to ? of their total cross section area
60%
without exception termination provisions of equipment for circuits rated 100 amps or less, or marked for 14 awg through 1 awg conductor. shall be used only
60c
what is the circular mil area of #12 copper stranded conductor
6530
what would be the maximum number of, THHN 250 kcmil copper conductors that could be installed in a 3 inch rigid metal conduit?
7
the minimum size conductors permitted for bonding swimming pools steel is?
8
the smallest size grounding electrode conductor permitted is?
8 awg
under the optional calculation for single family an electric range of 12 kw would be calculated at?
8 kw
for stationary motors of 2 HP or less and 300v or less on ac circuits, the controller can be an ac-rated only general-use snap switch where the motor full-load current rating is not more than ? % of the rating of the switch
80
sorry circuit and ground fault protection for an individual air conditioner motor compressor shall not exceed ?% of the motor compressor rated load current or branch circuit selection current whichever is greater
80%
all forming shells of a wet niche fixture shall have provisions for a number ? awg grounding conductor
8awg
a household range of 11kw rating under standard calculation would be de-rated to ?kw
8kw
