Sorry my mistake, the immersion heater is on a 16 amp mcb, it's the
electric oven that's on a 30 amp mcb.

We haven't used the immersion heater in 8 years and have no intention
of doing so, so as far as I'm concerned it's a spare supply. In the
event we have to use it in an emergency then the spur I've taken of it
will be switched off.


On Mon, 18 Dec 2006 19:02:22 -0000, "john"
wrote:


"Mark" wrote in message
.. .
Some time ago I fitted a new socket outlet in my son's bedroom. I had
no desire to go into the wall and hook into the existing ring main so
I decided to tap in somewhere else. Basically I tapped into the
immersion heater supply in the airing cupboard, (fused 30amp at the
consumer unit). Then I went through a 13amp fused spur, then up into
the attic, and then down into the bedroom using mini trunking, and
finally connected an RCD protected double socket. Everything fine.

Single 2.5mm cable is only rated at 23 amps.
The immersion circuit should be on a 16 amp mcb.with no other supply taken
from it !

Now I need to do the same in my daughter's room. My question is, if I
wire in parallel from the feed to the socket in my son's room do I
need to use another RCD protected socket? Or will the RCD in my son's
room provide protection for a regular parallel socket.

Safety is paramount of course but I don't want to spend 20 odd quid on
another RCD socket if I don't need to.

Incidentally the sockets are only for hi-fi/TV so I doubt the combined
load will ever exceed 5 amps.

Thanks