NCCER Practice Exam PT 6

If there are four equipment grounding conductors in a box, how many conductors must you subtract from the total allowed?

• One

• Four

• Three

• Two

Square metal boxes are available in 4" and ____.

• 4 1/16"

• 5"

• 5 1/4"

• 6"

A conductor under 12" (300 mm) long running through a box counts as the conductor equivalent of ____.

• 0

• 12

• 1

• 2

If you have a pull box with conduit runs entering at right angles, how deep should it be?

• It must be eight times the diameter of the smallest conduit.

• It must be six times the diameter of the smallest conduit.

• It only has to be deep enough to allow the proper installation of locknuts and bushings.

• It must be four times the diameter of the largest conduit.

A box installed under an open porch with a roof is considered a ____.

• dry location

• wet location

• weatherproof location

• damp location

You can increase the capacity of an electrical box by using ____.

• fixture studs

• wire connectors

• raised outlet covers

• strap-mounted devices

The maximum weight allowed by the NEC® when ceiling fans are mounted directly to an approved, unmarked box is ______.

• 55 lb

• 45 lb

• 35 lb

• 25 lb

If the largest trade size of conduit entering a pull box is 3", and it is a straight pull, the minimum box length allowed is ______.

• 24"

• 20"

• 36"

• 30"

How many conductors must be taken away for each device strap?

• One

• Three

• Two

• Four

The rules for box installations are in ______.

• NEC Article 314, Part II

• NEC Article 314, Part I

• NEC Article 314, Part III

• NEC Article 314, Part IV