NHIE Electrical Systems 3

Question 1

Which wire color is used for the ungrounded (hot) conductor in standard US residential 120V wiring?

Accepted Answer

Black

Answer

White

Answer

Green

Answer

Gray

Question 2

A home inspector observes a 240V dryer circuit using a 3-wire connection to a newer dryer. What is the issue?

Accepted Answer

Dryers require 4-wire connections in new installations per current NEC

Answer

3-wire connections are only for 120V circuits

Answer

The dryer requires a dedicated 30-amp circuit, not a standard circuit

Answer

240V circuits always require conduit, not cable

Question 3

What is the standard amperage rating for a residential kitchen small appliance circuit?

Accepted Answer

20 amps

Answer

15 amps

Answer

30 amps

Answer

40 amps

Question 4

An inspector finds a subpanel in a detached garage where the neutral and ground bars are bonded together. What should be reported?

Accepted Answer

This is a defect; subpanels must have separate neutral and ground bars

Answer

This is correct because all panels must bond neutral and ground

Answer

This is acceptable only if the garage has no equipment grounds

Answer

Bonding is required only when the subpanel is fed by aluminum conductors

Question 5

What type of protection is required for receptacles in a bathroom, within 6 feet of a sink?

Accepted Answer

GFCI protection

Answer

AFCI protection

Answer

Tamper-resistant receptacles

Answer

Surge-protected receptacles

Question 6

A home inspector observes wiring connections made with wire nuts inside a wall without a junction box. What should be reported?

Accepted Answer

All wiring splices must be made inside an accessible, covered junction box

Answer

Wire nuts are only permitted inside panels, not in walls

Answer

Wire nuts require a minimum 6-inch tail for proper installation

Answer

This is acceptable if the connections are within 12 inches of a stud

Question 7

Which of the following is NOT a required location for AFCI protection in newer construction under current NEC?

Accepted Answer

Bathroom circuits

Answer

Bedroom circuits

Answer

Kitchen circuits

Answer

Living room circuits