Home Inspector Electrical System Safety Hazards Questions and Answers

Question 1

During an inspection of a home built in 1968, a home inspector identifies solid strand aluminum branch circuit wiring.
Which of the following represents the MOST significant hazard associated with this type of wiring?

Accepted Answer

Connections can loosen over time, leading to overheating and arcing.

Answer

It is incompatible with modern high-amperage appliances.

Answer

The wiring is prone to breaking during installation.

Answer

Aluminum wiring emits a gas that can degrade insulation.

Question 2

A home inspector finds a service panel with circuit breakers labeled "FPE Stab-Lok." This finding should be reported as a significant safety concern primarily because these panels are known for which of the following?

Accepted Answer

A high rate of manufacturing defects causing breakers to fail to trip.

Answer

Containing asbestos insulation, which is a respiratory hazard.

Answer

Being susceptible to water intrusion due to poor case design.

Answer

Using an outdated grounding method that is no longer code-compliant.

Question 3

Which of the following describes a key safety hazard associated with knob-and-tube wiring?

Accepted Answer

The system inherently lacks a grounding conductor.

Answer

The porcelain knobs are prone to shattering with age.

Answer

It can only be used with low-voltage lighting systems.

Answer

The copper conductors are typically undersized for any load.

Question 4

While inspecting a recently remodeled kitchen, a home inspector notes that a new 125-volt, 15-amp receptacle is installed 18 inches from the edge of the kitchen sink to serve a countertop appliance. Which safety device is MOST likely required for this receptacle?

Accepted Answer

A Ground-Fault Circuit Interrupter (GFCI).

Answer

A surge protector.

Answer

An Arc-Fault Circuit Interrupter (AFCI).

Answer

A dedicated 20-amp circuit.

Question 5

An inspector observes two conductors terminated under a single screw on a circuit breaker that is not designed for this purpose. This defect is commonly referred to as a:

Accepted Answer

Double-tap

Answer

Series fault

Answer

Phase imbalance

Answer

Cross connection

Question 6

What is the primary function of an Arc-Fault Circuit Interrupter (AFCI) device?

Accepted Answer

To de-energize a circuit when it detects a dangerous arcing condition.

Answer

To protect occupants from shock in wet locations.

Answer

To protect sensitive electronics from voltage surges.

Answer

To prevent the overloading of a circuit from too many appliances.

During an inspection of a home built in 1968, a home inspector identifies solid strand aluminum branch circuit wiring.Which of the following represents the MOST significant hazard associated with this type of wiring?

During an inspection of a home built in 1968, a home inspector identifies solid strand aluminum branch circuit wiring.
Which of the following represents the MOST significant hazard associated with this type of wiring?