Practice Test Geeks(NABCEP) Certified North American Board of Certified Energy Practitioners Specialist Practice Test
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PV System Mechanical Installation Flashcards

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

Read the first 7 PV System Mechanical Installation flashcards as text

  1. What wind exposure category would typically apply to a PV array installed on a building located in an open terrain with scattered obstructions?

    Answer: Exposure C

    Exposure C applies to open terrain with scattered obstructions generally less than 30 feet high, which increases wind pressure on structures.

  2. When calculating roof dead load capacity for a PV installation, what is a typical weight range for crystalline silicon PV modules?

    Answer: 2.5–4 psf

    Most standard crystalline silicon modules weigh between 2.5 and 4 pounds per square foot including the racking system.

  3. Which of the following describes the correct sequence for installing a ballasted flat-roof racking system?

    Answer: Verify tilt angle, install rails, attach modules, place ballast

    Tilt angle must be verified first, then rails installed, ballast added to hold the system, and finally modules attached and secured.

  4. What is the primary reason for maintaining a minimum clearance between the bottom of PV modules and the roof surface?

    Answer: To facilitate airflow for module cooling and debris removal

    Adequate clearance promotes airflow under modules to dissipate heat, improving performance, and allows debris and water to clear.

  5. A 2×6 rafter is being assessed for additional loading from a rooftop PV array. Which document governs the structural capacity of wood framing members?

    Answer: IBC and AWC NDS (National Design Specification)

    The International Building Code (IBC) combined with the AWC National Design Specification governs the structural design of wood framing members.

  6. Which type of roof attachment is most suitable for a tile roof to avoid breaking tiles during PV installation?

    Answer: Tile replacement mount or tile hook

    Tile replacement mounts or tile hooks are designed to integrate with the tile profile, eliminating the need to drill through fragile tiles.

  7. In a BIPV (building-integrated PV) installation, modules serve as which building component?

    Answer: Roofing or cladding material replacing conventional building materials

    BIPV modules replace conventional roofing, glazing, or cladding while simultaneously generating electricity.