Question 10021 of 749 · Maryland Journeyperson Electrician Exam
A branch circuit supplies an underwater pool luminaire operating above the low-voltage contact limit. What protection is required?
Exactly one answer is correct.
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Correct answer to question 10021
- B: GFCI protection installed in the branch circuit
Explanation
Underwater luminaires operating at more than the low-voltage contact limit must be supplied through a GFCI so that no shock hazard exists during relamping or under ground-fault conditions. Relamping a wet-niche luminaire normally means pulling it onto the deck, so the GFCI also protects the person servicing it.
More questions: Special Equipment, Pools, PV and EV
- 10022For sinusoidal ac, the low-voltage contact limit used in Article 680 is how many volts RMS?
- 10025What is the minimum size of a solid copper equipotential bonding conductor for a permanently installed pool?
- 10027Perimeter surfaces around a pool must be bonded for what minimum horizontal distance beyond the inside walls?
- 10030For conductive pool shells, perimeter surface bonding must attach to the structural reinforcing steel or copper grid at a minimum of how many points?
- 10031Pool water must be bonded by a conductive surface in contact with the water of at least what area?
- 10032Metal parts such as fences or railings must be bonded when within what distance of the inside walls of a pool, unless separated by a permanent barrier?