I want to install LED lights in a pool. The original transformer outputs 12V 6A. Now I don't trust my life to a cheap transformer so I want to go sure. Yet I also don't want to spend more money than necessary. I don't have to live for ever.
Found an adapter that measures residual currents and breaks the circuit if delta larger 30mA. RCD safety adaptor So this sounds quite good to me.
Now I wonder, isn't it possible that in a worst case situation this device would not measure any delta between both power lines and the human between both lines beeing effectively roasted?
Found out that cheap transformers can output the full incoming current in a state of failue. Safetytransformers where a short circuit is not possible by design cost quite some money.
Is such an RCD adaptor a safeguard for any transformer failure?
Edit: Would it help to ground the poolwater - lay a cable from inside the pool to the grounding connector in the power outlet.