Re: Help required, Electrical.

Hi Swim,

Did Matty manage to measure the amount of voltage between the water and a convenient earth or neutral? Obviously if everything is double insulated any voltage in the water has nowhere to go until someone puts a hand or arm into the water and completes a circuit that's why your fish aren't affected - there's no current flowing.

Anything above 50volts can seriously harm or kill a person that's why there's a minimum disconnection time for a circuit breaker or fuse to trip as under fault conditions extraneous metalwork such as water and gas pipes can become live momentarily, that live being restricted to 50volts by the disconnection time - if the device failed to act within the prescribed time, the voltage would be a lot higher for a longer period of time and could be fatal. Anything less than 50volts can give you a `tingle` - just try touching a cattle fence to see what that's like. (this is not a suggestion)

I would do what LD suggested and remove or isolate items of equipment one at a time, particularly the heaters as water-pump impellers are separated from their motors by waterproof seals and aren't normally a problem unless the housings are cracked.

Re: Help required, Electrical.

Don't you just hate it when someone asks for help and advice