Originally Posted by James Solecki - INTEGRA
Wiring and lighting on a dock structure above a lake is a totally different application then pool and spa installations. GFCI breakers on the primary circuits, all SJOW 12/3 wire, fully grounded circuits throughout is the safe way to go. If installing into a new structure, you have the opportunity to run all your wire in conduit which is extra nice.
Have a safe day.
You make no mention of the transformer you are using? The wire and the circuits you covered but what if lightning strikes and somehow crosses the 120v and 12v at your tf?