Practice Test Geeks(InterNACHI) International Association of Certified Home Inspectors Practice Test
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Electrical Systems and Safety Flashcards

7 cards from real INTERNACHI 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 and Safety flashcards as text

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

    Answer: No maximum is specified in the NEC

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

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

    Answer: Water intrusion causing corrosion inside the meter base

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

  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?

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

    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.

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

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

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

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

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

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

  6. What type of electrical hazard is indicated by scorch marks or discoloration around an outlet or switch cover plate?

    Answer: Evidence of arcing or overheating at that device

    Scorch marks or discoloration around electrical devices indicate past or ongoing arcing or heat buildup, which is a serious fire hazard.

  7. According to InterNACHI standards, what is an inspector's responsibility when they cannot access an electrical panel due to stored items blocking it?

    Answer: Report the panel as inaccessible and recommend evaluation

    When a panel cannot be accessed, the inspector must report it as inaccessible and recommend that it be evaluated when access is available.