Article 300
General Requirements
General Requirements
Electrical wiring within the cavity of a fire-rated floor-ceiling or roof-ceiling assembly shall not be supported by the ceiling assembly or ceiling support wires. True or False?
True
300.11(B)(1)
In accordance with Article 310, temperature correction and adjustment factors are permitted to be applied to the ampacity for the temperature rating of the _____, if the corrected and adjusted ampacity does not exceed the ampacity for the temperature rating of the termination in accordance with the provisions of 110.14(C).
conductor
310.15(A)
Noncombustible surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than _____ at the edge of a cabinet or cutout box employing a flush-type cover.
1/8 in.
312.4
A device or utilization equipment wider than a single 2 in. device box shall have _____ allowance provided for each gang required for mounting.
a double volume
314.16(B)(4)
Type NM cable shall not be used _____.
embedded in poured cement, concrete, or aggregate
334.12(A)(9)
Where raceways contain insulated circuit conductors _____ AWG and larger, the conductors shall be protected from abrasion during and after installation by an identified fitting providing a smoothly rounded insulating surface.
4
300.4(G)
Where six current-carrying conductors are run in the same conduit or cable, the ampacity of each conductor shall be lowered to _____ percent of its ampacity.
80
310.15(C)(1) and Table 310.15(C)(1)
Nonmetallic-sheathed cables can enter the top of surface-mounted cabinets, cutout boxes, and meter socket enclosures through nonflexible raceways not less than 18 in. and not more than _____ in length if all of the required conditions are met.
10 ft
312.5(C) Ex
Where up to four equipment grounding conductors enter a box, a _____ allowance in accordance with Table 314.16(B) shall be made based on the largest equipment grounding conductor entering the box.
a single volume
314.16(B)(5)
Where Type NM cable is run at angles with joists in unfinished basements and crawl spaces, it is permissible to secure cables not smaller than _____conductors directly to the lower edges of the joist.
two, 6 AWG or three, 8 AWG
334.15(C)
Raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, elbows, couplings, fittings, supports, and support hardware shall be of materials suitable for _____.
the environment in which they are to be installed
300.6
Conductors that are intended for use as ungrounded conductors, whether used as a single conductor or in multiconductor cables, shall be finished to be clearly distinguishable from _____ conductors.
grounded and equipment grounding
310.6(C)
The wiring space within enclosures for _____ and overcurrent devices shall be permitted for other wiring and equipment subject to limitations for specific equipment in accordance with Article 312.
switches
312.8(A)
In installations within or behind noncombustible walls or ceilings, the front edge of a box, plaster ring, extension ring, or listed extender employing a flush-type cover, shall be set back not more than _____ in. from the finished surface.
1/4
314.20
Grommets or bushings for the protection of Type NM cable installed through or parallel to framing members shall be _____ for the purpose.
listed
334.17
Where corrosion protection is necessary for ferrous metal equipment and the conduit is threaded in the field, the threads shall be coated with a(an) _____ electrically conductive, corrosion-resistant compound.
approved
300.6(A)
In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, three-phase, wye-connected system, the common conductor is not a current-carrying conductor and not subject to the adjustment provisions of 310.15(C)(1). True or False?
False
310.15(E)(2)
Enclosures for switches or overcurrent devices are allowed to have conductors feeding through where the wiring space at any cross section is not filled to more than _____ percent of the cross-sectional area of the space.
40
312.8(A)(1)
In installations within walls or ceilings constructed of wood or other combustible surface material, boxes, plaster rings, extension rings, or listed extenders shall _____.
extend to the finished surface or project therefrom
314.20
Type NM cable protected from physical damage by a raceway shall not be required to be _____ within the raceway.
secured
334.30.
A cable, raceway, or box installed under metal-corrugated sheet roof decking shall be supported so the top of the cable, raceway, or box is not less than _____ from the lowest surface of the roof decking to the top of the cable, raceway, or box.
1 1/2 in
300.4(E)
Where there are no adjustment or correction factors required, the service conductors for a rated service of _____ supplying the entire load associated with an individual dwelling unit, may be sized applying Table 310.12.
100A, 200A, and 400A
310.12(A)
Article _____ covers the installation and construction specifications of cabinets, cutout boxes, and meter socket enclosures.
312
312.1
An outlet box or enclosure mounted on a building or other surface shall be _____.
rigidly and securely fastened in place
314.23(A)
Nonmetallic-sheathed cable shall be permitted to be unsupported where the cable is _____.
fished between access points through concealed spaces in finished buildings or structures
334.30(B)(1) and (2)