Lights at 15 volts or less requires a pool/spa type transformer. Lights at more than 15 volts but less than 150 volts requires ground fault protection. But is it ok to use color-blending LED submersible lights that operate at 24V DC? According to NEC 680.51, a ground fault breaker is required. But if moisture gets to the conductors after the power supply, the GFCI won't trip. Any ideas?
