On Wed, 19 Mar 2008 23:58:33 +0000, John Rumm
wrote:

You may want to consider a non RCD protected (or dedicated RCD/RCBO) for
the freezer. No point losing the contents when the PIR lamp gets damp!

Thanks. That's a good point. I thought all the regs. demanded RCD
protection now though?

I was going to get a 2-way garage CU but I think I now need a 3-way:
lights, sockets, and freezer socket.

I don't know much about RCBOs. I think they are the way to go: at
least they only switch off the faulty circuit rather than the whole
system when there is a fault, but OTOH don't they just switch the live
whereas a RCD's CU isolates both L&N when tripped?