Practice Test Geeks(NHIE) National Home Inspector Examination Practice Test
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Electrical Systems Flashcards

7 cards from real NHIE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Electrical Systems flashcards as text

  1. What is the maximum number of circuits allowed on a 200-amp residential service panel?

    Answer: The number depends on the panel's listed capacity, not amperage

    The maximum number of circuits is determined by the panel's UL listing and physical space, not solely by the amperage rating.

  2. A home inspector finds a 20-amp breaker protecting a circuit with 14 AWG wire. What is the problem?

    Answer: 14 AWG wire is only rated for 15 amps and is undersized for a 20-amp breaker

    14 AWG copper wire is rated for 15 amps; a 20-amp breaker will not trip before the wire overheats.

  3. What does a three-slot receptacle with a U-shaped slot indicate about the circuit?

    Answer: The circuit is grounded, with the U-slot being the equipment ground

    The U-shaped slot on a three-prong receptacle is the equipment grounding conductor connection.

  4. An inspector observes a 60-amp disconnect for an air conditioning unit with 10 AWG wire. The unit's nameplate states a maximum overcurrent protection of 40 amps. What is the concern?

    Answer: The overcurrent protection exceeds the equipment's nameplate maximum rating

    Overcurrent protection must not exceed the equipment's maximum listed rating to protect the appliance and wiring.

  5. What is the minimum height above a residential garage floor for a receptacle outlet?

    Answer: There is no minimum height; standard placement applies

    NEC does not specify a minimum height for garage receptacles, though they must be GFCI-protected.

  6. A home inspector finds exposed Romex (NM cable) running along the surface of a basement wall below 7 feet. What should be reported?

    Answer: NM cable must be protected from physical damage when exposed below 7 feet

    NM cable exposed to physical damage must be protected by conduit or other approved means below 7 feet.

  7. What is the purpose of a 'load calculation' as it relates to a home's electrical service?

    Answer: It calculates whether the service amperage is adequate for the home's electrical demand

    A load calculation follows NEC Article 220 to verify the service entrance is sized adequately for the home's total electrical load.