Article 300 ( wiring methods)

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Class two

Raceways can be used as a means of support of _____ circuit conductors or cables that connect to the same equipment

6 inches

Rigid metal conduit that is directly buried outdoors so I have _____ at least of cover

Raceway,cable or trench

All conductors of a circuit , including the grounded and equipment grounding conductors, shall be contained within the same ____

Ferrous material

Any enclosures ,raceways ,or equipment made of ______ shall be protected from corrosion.

0 inches

The minimum cover required for direct buried cables ,metal raceways ,and nonmetallic raceways under a building is ____

24 inches

The minimum cover requirement for direct burial type UF cable under 600v, installed outdoors, that supplies a 120 V 30 amp circuit is ____

60% fill

A conduit nipple 24 inches or less is allowed _____

53% fill

A raceway with one conductor is permitted ____

40% fill

A raceway with three or more conductors is permitted _____

31% fill

A raceway with two conductors is permitted ____

Wiring methods

Article 300 pertains to_____ .

1/16 of an inch

Cables laid in wood notches require protection against nails or screws by using a steel plate at least _____ .

1 1/2 inches

Cables or raceways installed on the metal corrugated sheet roof decking , shall be supported to the nearest outside surface of the cable or raceway not less than ____

Insulation rating

Conductors of AC and DC circuits rated 600 V or less can occupy the same raceway provided they all have the same _____

12 inches

Direct buried service conductors that are not encased in concrete , and that are buried 18 inches or more below grade , shall have their location identified by a warning ribbon placed in the trench ___ above the installation

4 feet

Flexible metal conduit in lengths not exceeding ____ can be used to connect equipment inside of fabricated duct (plenum)

Aluminum

In New York City ______ raceways are not allowed to be embedded in concrete or in direct contact with the earth

Grounded

In multi wire branch circuits, the continuity of the ____ conductor shall not be dependent upon the device connections.

Welding

Metal raceways shall not be supported by ____ to the raceway

Flame retardant insulation

The X in wire acronyms stands for ______

wet

The interior of underground raceways ,shall be considered a _____ location.

#10 AWG

The largest solid conductor allowed in a raceway is _____

Heat resistance (167 F)

The letter H in wire acronyms stands for _____

Nylon coated, For resistance to oil and gasoline

The letter N in wire acronyms stands for _____

Rubber ( thermoset)

The letter R inwire acronyms stands for____

Thermoplastic

The letter T in the acronym THHN stands for _____

Wet ( can be submerged in water)

The letter W in wire acronyms stands for ____

High heat (194 F)

The letters HH inwire acronyms stands for ____

Underground feeder

UF Cable is also known as _____ cable, and is a direct burial cable

Underground service entrance

USE Cable is a direct burial cable that stands for____.

Color, tagging, or other distinguishable means

We are independent support wires are used, they shall have _____ to differentiate from those of fire rated design.

Not less than 1 1/4"

When cables are installed parallel to framing members, The nearest outside surface of the cable shall be____ to the nearest edge of the framing member to avoid nails and screws.

1 1/4 inches

When cables are installed through bored holes in joists, rafters, or wood members, the holes shall be bored so that no less than ____ is from the edge of the wood member..

18 inches

When installing PVC underground without concrete ,there shall be a minimum ______ of cover.

Bushing or terminal fitting

When installing direct buried cables, a _____ shall be used at the end of a conduit that terminates underground.

#4AWG

When raceways contain conductors____ or larger, The conductors shall be protected from abrasion during and after installation by a fitting that provides a smooth rounded insulating surface.

Bushings or grommets

When type NM cable passes through factory openings in metal members it shall be protected by ____that cover metal edges

3 inches

Wihen the opening to an outlet junction or switchpoint is less than 8 inches in any dimension , each conductor shall be long enough to extend at least ____ outside the opening of the enclosure.


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