The case of the mysterious Immersion heaters....

...think about it sheds use ur noodle!
cant help but think that now you think im gone your still trying to get one over on me

Not trying to get anything over on anybody - I've not really given any thought to the problem - there seemed little point adding any random theories, as there are enough of those floating about already.

And anyway - I was addressing Sparky Scifi as SS, as it was he who was wrestling with the problem.

PS - welcome back!