InterNACHI Electrical Systems and Safety 4

Question 1

What is the maximum height above the floor at which a standard wall-mounted electrical outlet may be installed per general accessibility guidelines?

Accepted Answer

No maximum is specified in the NEC

Answer

The NEC does not specify a maximum height for receptacle installation, though accessibility guidelines (ADA) recommend no higher than 48 inches.

Question 2

An inspector observes a service entrance cable with damaged outer insulation at the weatherhead. What is the primary concern?

Accepted Answer

Water intrusion causing corrosion inside the meter base

Answer

Damaged service entrance cable insulation allows moisture to enter the cable and meter base, causing corrosion and potential arcing failures.

Question 3

Which of the following is the correct InterNACHI-recommended finding when a home inspector observes a 60-amp main disconnect in a home with central air conditioning and electric range?

Accepted Answer

The service capacity appears insufficient for the electrical loads present and evaluation by an electrician is recommended

Answer

Modern homes with central AC and electric cooking typically require 150–200 amp service; 60-amp service is likely undersized and warrants an electrician's evaluation.

Question 4

A home inspector finds Federal Pacific Electric (FPE) Stab-Lok panel in a home. What should the report state?

Accepted Answer

FPE Stab-Lok panels have documented reliability concerns and evaluation by a licensed electrician is recommended

Answer

FPE Stab-Lok panels have a documented history of breaker failures and fire risk; inspectors should recommend evaluation but cannot require replacement.

Question 5

What does it mean when an electrical panel has its neutral and ground buses bonded together in a sub-panel?

Accepted Answer

This is a defect that creates a parallel neutral path and shock hazard

Answer

In sub-panels, the neutral and ground buses must be separated because bonding them creates a parallel return path that can energize ground wires.

(InterNACHI) International Association of Certified Home Inspectors Practice Test

(InterNACHI) International Association of Certified Home Inspectors Practice Test

InterNACHI Electrical Systems and Safety 4