Conductors
Protection From Physical Damage
Underground Installations
Securing and Supporting
Random
100

The Wiring methods specified in Chapter 3 Shall be used for _____ volts ac, _______ volts dc, nominal, or less where not specifically limited elsewhere in Chapter 3.

1000 volts ac, 1500 volts dc

100

When a cable- or raceway-type wiring method passes through a bored hole in a wood member, the edge of the hole must normally be at least this far from the edge of the member.

1 1/4 inches

100

The interior of underground enclosures or raceways is considered this type of location.

A wet location.

100

________ shall not be used as a means of support for other cables, raceways, or nonelectrical equipment

Cable wiring methods
100

At least ____ of free conductor measured from the point in the box where it emerges from its raceway or cable sheath, shall be left at each outlet, junction, and switch point for splices or the connection of luminaires or devices. 

6 in

200

All conductors of the same circuit shall be contained within _________.

the same raceway, conduit body, auxiliary gutter, cable tray, cable bus assembly, trench, cable, or cord

200

If the required 1 1/4-inch distance from the edge of a wood member cannot be maintained, this protection is normally required against nails or screws.

A steel plate or bushing at least 1/16 inch (1.6 mm) thick, of appropriate length and width.

200

Direct-buried cable, conduit, or other raceways must meet the minimum cover requirements in this table.

Table 300.5(A)

200

Raceways, cable assemblies, boxes, cabinets, and fittings shall be securely _____________. 

fastened in place

200

In multiwire branch circuits, the continuity of a ____ conductors shall bot depend on device connections such as lamp holders, receptacles, and so forth where the removal of such devices would interrupt the continuity.

grounded

300

Conductors shall be permitted to be run in ______ in accordance with 310.10(G)

parallel

300

NM cable passing through punched, cut, or drilled openings in metal framing must be protected by these items covering all metal edges.

Listed bushings or listed grommets.

300

Direct-buried conductors and cables emerging from grade and covered by the specified columns of Table 300.5(A) must be protected up to at least this height above finished grade.

8 feet

300

Raceways, cable armors, and cable sheaths shall be ________ between cabinets, boxes, conduit bodies, fittings, or other enclosures or outlets. 

continuous

300

If an enclosure is smaller than 8 inches in any dimensions each conductor shall be long enough to extend at least ____ outside the opening.

3 inches

400

conductors of circuits rated over 1000v ac, 1500v dc, nominal, shall not _________________with conductors rated 1000v ac, 1500v dc, nominal, or less unless permitted in accordance with 305.4

occupy the same equipment wiring enclosure, cable, or raceway

400

A cable, raceway, or box installed under metal-corrugated sheet roof decking must have at least this distance from the lowest surface of the decking to its top.

1 1/2 inches

400

Underground service conductors that are not concrete-encased and are buried at least 18 inches deep must have their location identified by this, placed at least 12 inches above the underground installation.

A warning ribbon.

400

Cables and raceways shall not be supported by _____.

ceiling grids

400

Fittings and connectors shall be used only with the specific wiring methods for which they are __________.

designed and listed

500

Conductors of ac and dc circuits rated 1000v ac, 1500 v dc, nominal, or less shall be permitted to to occupy the same raceway as long as all conductors have _______.

a voltage rating equal to at least the maximum circuit voltage applied to any conductor.

500

A raceway crossing a structural joint intended for expansion, contraction, or deflection requires this type of fitting or another approved means.

A listed expansion/deflection fitting.

500

Conductors installed in Rigid Metal Conduit under a highway shall be buried how deep?

24 inches

500

Metal raceways, cable armor, and other metal enclosures are joined together and connected to boxes, fittings, and cabinets to provide this.

Effective electrical continuity.

500

conductors in vertical raceways shall be supported if the vertical rise exceeds the values in Table _______

300.19 (A)