On 9 Jul, 14:46, John Rumm wrote:


SNIP

when something goes wrong in a big way ;-)

Shifting the immersion over to the non RCD side would also be a good
move. It may not cure your problem, but it will stop the immersion
contributing to it.

If you follow this route make certain that you also move the immersion
heater cable neutral across to the non RCD protected neutral rail as
well or you WILL get tripping when you try to use the immersion heater