Exam 3: Boxes and Enclosures

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

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

The minimum box width for U pulls must include ____.

Volume in boxes can be increased by using ____ rings, domed covers, extension rings, or similar items.

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

Equipment grounding conductor(s) or equipment bonding jumpers entering a box count as ____.

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

Supporting screws for nonmetallic boxes must be mounted ____.

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.

____ are permitted inside conduit bodies, if the manufacturer durably and legibly marked the cubic inch capacity on the conduit body.

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

Where a box contains both straight and angle (or U) pulls, or straight pulls and splices, calculate each type of pull ____ to find the dimension.

A luminaire that weighs more than ____ pounds shall be supported independently of the outlet box, unless the outlet box is listed and marked on the interior of the box to indicate the maximum weight the box shall be permitted to support.

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

Conduit body support must be ____.

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

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

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

A 3 x 2-in. device box, 2.5 in. deep, has a volume of ____ cubic inches.

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