CHI Electrical Systems Inspection 2

Question 1

What is the minimum clearance required between the top of a residential electrical panel and the ceiling?

Accepted Answer

6 feet

Answer

NEC requires a minimum of 6 feet of headroom above electrical panels to allow safe working space.

Question 2

Which condition is indicated when a home inspector finds aluminum wiring connected directly to a standard duplex receptacle rated for copper only?

Accepted Answer

A potential fire hazard due to galvanic incompatibility

Answer

Aluminum wiring connected to copper-only devices creates a galvanic reaction that can cause overheating and fire hazard.

Question 3

A home inspector observes double-tapping on a circuit breaker. What does this mean?

Accepted Answer

Two wires are connected to a single breaker terminal not rated for it

Answer

Double-tapping occurs when two conductors are connected to a breaker terminal designed for only one, creating a potential loose connection and fire hazard.

Question 4

What does a home inspector look for when inspecting knob-and-tube wiring?

Accepted Answer

Signs of insulation contact, splices, or modifications

Answer

Knob-and-tube wiring must be inspected for improper modifications, contact with insulation (fire hazard), and unauthorized splices.

Question 5

Which of the following is a reportable deficiency when inspecting a sub-panel in a detached garage?

Accepted Answer

The neutral and ground conductors are bonded together at the sub-panel

Answer

In a sub-panel, the neutral and ground must be kept separate; bonding them together creates a shock hazard on the grounding path.

(CHI) Certified Home Inspector Practice Test

(CHI) Certified Home Inspector Practice Test

CHI Electrical Systems Inspection 2