NABCEP PV Associate (PVA) — Practice Exam
Installation: electrical: practice questions
Our NABCEP PV Associate bank has 18 questions on this topic. Here are 3 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
What is a grounding bushing used for?
- To seal conduit from water where it enters an outdoor enclosure
- To reduce conduit size
- To bond a metal conduit to an enclosure with a grounding conductor
- To insulate conduit
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C. To bond a metal conduit to an enclosure with a grounding conductor — Used where the conduit connection alone isn't a reliable bond.
Question 2
What does a NEMA 3R rating on an enclosure mean?
- It is submersible
- It is only for indoor use
- It is suitable for outdoor use and protects against rain
- It is explosion-proof and suited to hazardous locations such as battery rooms
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C. It is suitable for outdoor use and protects against rain — NEMA ratings are checked against the installed location.
Question 3
What is a drip loop?
- A type of conduit fitting
- A downward loop in a cable before it enters a box, so water drips off
- A loop in a ground wire
- A coil of extra wire kept for service at the end of each string
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B. A downward loop in a cable before it enters a box, so water drips off — It stops water running along the cable into equipment.