What steps should be taken to protect divers from electric shock hazards in wet environments?

• A. Use ground fault protection, proper insulated cables, keep electrical gear dry, and isolate power with LOTO.
• B. Use wet switches for quick test
• C. Ignore LOTO if quick
• D. Use only battery power and no grounding

Answer: (A)

In wet diving environments, water creates conductive paths that can turn a normal system into a shock hazard. The protection you apply should rapidly remove energization if something goes wrong and reduce exposure to any live conductors. The best approach combines several proven controls: ground fault protection detects even small leakage currents and quickly shuts off power, preventing a shock if a diver accidentally bridges a live conductor with water or equipment; use properly insulated cables and enclosures so exposed surfaces aren’t energized or capable of conducting through moisture; keep electrical gear dry and housed in equipment rated for wet conditions to minimize moisture ingress and corrosion; and isolate power with Lockout/Tagout so no one can energize equipment during setup, maintenance, or when divers are in the water.

This combination addresses both the source of the hazard and the path to the diver. Relying on wet switches for quick tests, bypassing LOTO for any reason, or using only battery power without considering grounding and isolation leaves dangerous gaps. Battery power helps in some cases, but it doesn’t remove the need for proper fault protection, insulation, dryness, and controlled energization to keep divers safe.