NEC ELECTRIC 2

Question 1

What is the minimum size copper conductor permitted for a branch circuit supplying general-purpose receptacles in a dwelling?

Accepted Answer

14 AWG

Answer

14 AWG copper is the minimum size for a 15-ampere general-purpose branch circuit.

Question 2

GFCI protection is required for receptacles installed in which of the following dwelling locations?

Accepted Answer

Bathrooms

Answer

Bathrooms require GFCI protection because of the presence of water.

Question 3

What is the standard color used to identify the grounded (neutral) conductor in a typical installation?

Accepted Answer

White or gray

Answer

White or gray identifies the grounded neutral conductor.

Question 4

The minimum burial depth for a residential 120-volt circuit under a driveway using rigid metal conduit is generally:

Accepted Answer

6 inches

Answer

Rigid metal conduit may be buried at 6 inches under a residential driveway per NEC burial tables.

Question 5

Which device is designed to protect against arcing faults in dwelling bedroom circuits?

Accepted Answer

AFCI

Answer

AFCI (arc-fault circuit interrupter) protects against dangerous arcing faults.

NEC Practice Test