On 30 Oct 2006 15:13:39 -0800 someone who may be
" wrote this:-

To avoid running an extra cable from the cooker supply point to the
oven housing to supply the microwave, is it permissible in principle to
wire the existing supply cable into the terminals of the single oven,
and then wire the supply lead of the microwave into those terminals
too?

No.

However, it is permissible to wire a second cable, of the same
diameter, into the oven terminals (assuming they are large enough)
which leads to a fused connection unit, into which the microwave
oven is wired. The connection unit should be accessible in case
someone needs to change the fuse and a switch would be useful.

While going through the aggravation have you considered a double
oven, as well as the microwave, or a fancy microwave that can also
be used as a conventional oven?

I will consult an electrician anyway, but am curious if the above
scheme is allowed, assuming the existing supply cable is of the
required size to supply both appliances.

As has been said, the important thing is to protect the cable
feeding the microwave. Cooker circuits generally have a 30 - 45A
protective device and that means a fair amount of let through energy
before it operates.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54