"John Borman" wrote in message
...
I've read it is ok to run them of the lighting main is this ok or is it
best
to run them from the CU


If you can supply them separately from other appliances, then all the
better, but convenience may dictate a supply from the lighting circuit. If
it's a huge job to run a supply directly back to the consumer unit, then
tapping into a nearby lighting junction box would be OK. But it is better
to run a separate constant, uninterrupted supply to them.