Exam 3: Boxes and Enclosures

Box calculations for 4 AWG and larger conductors (1000 volts or less) are performed based on the ____.

Cable connector(s) with a ____ outside the box are not counted when determining the number of conductors.

The weight supported by any single conduit shall not exceed ____.

What is the angle pull for a raceway in the horizontal dimension where the trade size of the largest raceway is 3 in.and the sum of the other raceways in the same row on the same wall is 4 in.?

The minimum box width for U pulls must include ____.

Wire connectors, pigtails, locknuts, bushings, raceway connectors, and grounding screws are not factors when calculating ____.

The maximum number of conductors applies only if the box does not contain any ____.

Equipment grounding conductor(s) or equipment bonding jumpers entering a box count as ____ unless there are more than four equipment grounding conductors. ​

Conduit body support must be ____.

____ or fewer luminaire wires (smaller than 14 AWG) and an equipment grounding conductor can be omitted from box fill calculations if they enter a box from a domed luminaire (or similar canopy) and terminate within that box.

Nonmetallic-sheathed cable not fastened to the box must be secured within ____ of the box.

What is the angle pull for a raceway in the vertical dimension where the trade size of the largest raceway is 4 in.and the sum of the other raceways in the same row on the same wall is 5 in.?

Snap switches (including dimmer switches) must be connected to a(n) ____ and must also provide a means to connect metal faceplates to the equipment grounding conductor, even if a metal faceplate is not installed.

Volume shall be marked on all nonmetallic boxes and boxes with a volume of ____ or less.

Inspection of the connections between luminaire conductors and circuit conductors must be possible without ____.

The length of a straight pull for multiple raceways must be at least ____ times the trade size (metric designator) of the largest single raceway.

No requirement specifies the depth of a box, unless a ____.

Where multiple rows of raceways enter a box, you should calculate each row separately and use the ____.

Multiconductor cord or cable used to support a box must be protected in an approved manner so that the conductors are not subjected to ____.

A 3- x 2-in.(75- x 50-mm) device box, 2.5 in.(65 mm) deep, has a volume of ____.