TheorySolar PV System Inspector Prep Practice Test Video
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Q1When reviewing a PV system permit package, which document is most essential for verifying electrical compliance?
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✓ Correct answer: Single-line electrical diagram
The single-line electrical diagram is the most essential document for verifying electrical compliance as it shows the complete electrical path from the PV modules through inverters to the point of interconnection, including all overcurrent protection devices, disconnects, and grounding details.
Q2During inspection, you notice the installed microinverters differ from those specified in the approved plans. What should be documented first?
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✓ Correct answer: The actual model and specifications of the installed microinverters
When a system component differs from approved plans, the inspector should first document the specific model and specifications of the installed equipment to determine if it complies with code requirements, even though it differs from the original documentation.
Q3What critical information must be included on a PV system site plan for proper documentation review?
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✓ Correct answer: Array location and orientation on the structure
Array location and orientation are critical on a site plan as they determine compliance with setback requirements, fire access pathways, and impact system performance calculations that are necessary for code compliance verification.
Q4Which discrepancy between permit documents and the actual installation would most likely require immediate correction?
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✓ Correct answer: Incorrect conductor sizing
Incorrect conductor sizing is the most serious discrepancy requiring immediate correction as undersized conductors can lead to overheating, fire hazards, and code violations that impact system safety.
Q5When reviewing structural documentation for a roof-mounted PV system, what information is most important to verify?
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✓ Correct answer: Roof load calculations showing adequate capacity
Roof load calculations are most important in structural documentation as they demonstrate that the building can safely support the additional weight of the PV system, preventing structural failure.
Q6What should an inspector do when the as-built PV system includes additional modules not shown in the approved plans?
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✓ Correct answer: Document the discrepancy and require revised electrical calculations
When additional modules are installed beyond what was approved, the inspector should document the discrepancy and require revised calculations to ensure the system remains code-compliant with the increased capacity.
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