I've jsut moved in to a flat and its only got electricity. The water tank has an 3kw immersion heater in it directly wired to a switch.

Do these things self regulate their heat or if left on will they just burn out? if they regulate any idea what temp it'll turn off at? if they dont, how long is it safe to leave it on for?

It doesnt have any kind of timing gear on it, so what can I do if i want hot water for a shower in the morning? Is there any kind of timer I can buy and wire in? or am I stuffed?


Cheers
JAmes.