Immersion heaters

[Millennium_Boy]

I still get conflicting information about installing domestic 3kw immersion heaters.

The way I do it is to run it off a 16a breaker, in 2.5mm cable, to a 13a Switched FUSED connection unit, and then with immersion flex to the heater itself.

Some people say that the fuse is a bit overkill, and say just use a double pole switch instead - what is right?

 

[plugwash]

if the cuircuit is on a 16A breaker the fuse isn't really needed

but it doesn't cause any problems either

i think most sparkys just do what they were shown when they were learning

 

[Lectrician]

Always taught at college to use 16amp breaker, 20amp DP switch.

Regs dont give any info to that sort of thing, but thats the way i do it.