Electrical Module 6 Test

What is the maximum weight allowed by the NEC when ceiling fans are mounted directly to an approved, unmarked outlet box?

35 pounds

Square metal boxes are available in sizes of

4‑11/16"

A box installed under a roofed open porch is considered a

Damp location.

A single‑gang outlet box used for surface mounting on concrete or block construction is called a(n)

Handy box.

Octagon and round boxes are used mostly for

Wall‑mounted and ceiling‑mounted lighting fixtures.

How many conductors must be deducted for each strap‑mounted device in a device box?

2 conductors

When sizing outlet boxes, deduct ______ conductors for each switch.

2 conductors.

Each conductor originating outside the box and terminating inside counts as

1 conductor.

A conductor under 12" (300 mm) long running through a box counts as

1 conductor.

If there are four equipment grounding conductors in a box, you must deduct ______ conductor(s).

1 conductor

The capacity of an outlet box can be increased by using

Extension rings.

An extension ring is used to increase the

Depth of the box.

Box installations are covered in

NEC Sections 314.15 – 314.30

All boxes must be sized, installed, and supported to meet current

NEC requirements

Blank covers are used when boxes serve as

Junction boxes.

If the largest trade diameter of a raceway entering a pull box is 3", and it is a straight pull, the minimum box size is

24 inches

The depth of a pull box with conduit entering at right angles

Must be sufficient for proper installation of locknuts and bushings

A(n) ______ is an enclosure used to facilitate cable installation in long runs.

Pull box.

For a straight pull, the minimum box length must be at least ______ times the largest raceway diameter.

8 times.

The minimum length for a junction box with two 3" conduits and one 4" conduit entering each side (angle pull) is

30 inches total.

______ means constructed or protected so that exposure to beating rain will not allow water entry.

Raintight.

A box designed to withstand an internal explosion without causing an external one is

Explosion‑proof.

A box constructed so moisture will not enter under test conditions is

Watertight.

A box protected so that weather exposure will not interfere with operation is

Weatherproof

A(n) ______ is a metallic or nonmetallic box installed in a wiring system from which current is taken to supply a device.

Outlet box

A(n) ______ is an enclosure where raceways or cables enter and conductors may be spliced.

Junction box.

A(n) ______ is a device used to physically connect conduit or cable to an outlet box or enclosure.

Connector

What is the maximum distance between receptacles along the floor line in any wall space?

12 feet