In article ,
Andy Wade writes:
John Rumm wrote:

What did you plug the socket tester into though? A socket on the cooker
point? If so then it would be correct for the oven to be on a RCD
protected supply anyway, simply because of this socket being there.

Except in the case where there's little or no chance of the socket being
used to supply portable equipment outdoors. In that situation no RCD is
required - unless of course it's a TT-earthed installation (in which
case RCD protection is required, but need not necessarily be 30 mA).

I know that's what the regs say, but I always make sure the
socket where the kettle is going to be plugged in is RCD
protected. With kettles being very frequently moved, containing
water, handled with wet hands, never checked/tested in domestic
premises, used until they actually die, and nowadays built as
consumables with limited lives, they seem to me to merit an RCD.
I would never fit a cooker switch with combined socket*, but if
there was one, then I would put that circuit on an RCD (or
better, an RCBO), or swap the cooker switch for one without a
socket.

*At least, I would never fit a cooker switch with combined
socket for that purpose. When I was putting in circuit for the
outdoor sockets on a 10mA RCBO, switched from inside the garage,
one of these combined switch/socket units was ideal. It gives me
a single switch to switch off all the outdoor sockets, combined
with a separately switched socket in the garage where outdoor
appliances might also be plugged in, with the same 10mA protection.

--
Andrew Gabriel