Equipment & SystemsQuestion 355 of 521
What GFCI requirement applies to an underwater pool luminaire operating above the low-voltage contact limit?
a.GFCI is never required for underwater luminaires
b.Underwater luminaires operating over the low-voltage contact limit (over 15 volts) must have GFCI protection
c.GFCI is required only for 120-volt units
d.GFCI is required only for spas, not pools
Explanation
Section 680.23(A)(3) requires ground-fault circuit-interrupter protection for underwater luminaires supplied at more than the low-voltage contact limit (over 15 volts). This protects swimmers from shock; the requirement is not limited to 120-volt units and is not exclusive to spas.
Law Reference: 2023 NEC §680.23Practice all 521 questions free — no signup required.
Related questions on this topic
- What marking must a generator carry?
- An on-site generator serving as the emergency source must have an on-site fuel supply sufficient for what minimum operating time at full load?
- Which recessed luminaire may be installed in direct contact with thermal insulation?
- When may a luminaire be used as a raceway for circuit conductors?
- Where is track lighting not permitted to be installed?
- How must emergency unit equipment (self-contained battery luminaires) be supplied?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-10 Electrical Trade Examination · How we review