NHIE Building Systems and Components 3

Question 1

What is the function of a TPR (temperature-pressure relief) valve on a water heater?

Accepted Answer

Release pressure and prevent explosion if temperature or pressure exceeds safe limits

Answer

The TPR valve is a safety device that automatically opens to discharge water when temperature exceeds 210°F or pressure exceeds 150 psi, preventing tank rupture or explosion.

Question 2

An inspector finds that the bathroom exhaust fan discharges into the attic. This is a deficiency because:

Accepted Answer

It introduces moisture into the attic, promoting mold and structural damage

Answer

Exhausting humid bathroom air into the attic causes moisture accumulation that can lead to mold growth, insulation damage, and wood rot in the roof structure.

Question 3

What is the recommended minimum depth for a footing in a cold climate?

Accepted Answer

Below the frost line

Answer

Footings must be placed below the local frost depth to prevent frost heave, which can shift the foundation and cause structural damage.

Question 4

When inspecting a chimney, what does efflorescence on the exterior masonry indicate?

Accepted Answer

Water is migrating through the masonry and depositing minerals on the surface

Answer

Efflorescence is the white mineral deposit left behind as water evaporates after passing through masonry, indicating ongoing water infiltration.

Question 5

Which AFCI protection is required by the NEC for bedroom circuits in new construction?

Accepted Answer

Arc-fault circuit interrupter (AFCI) breakers

Answer

The NEC requires AFCI breaker protection for bedroom circuits to detect dangerous arcing that can cause electrical fires from damaged wiring.

(NHIE) National Home Inspector Examination Practice Test

(NHIE) National Home Inspector Examination Practice Test

NHIE Building Systems and Components 3