On Tue, 02 Sep 2003 10:43:59 +0100 (BST), "Dave Liquorice"
wrote:

Even if I pull out the main fuse and switch off the breaker I still
assume that everything is live until tested with a volt stick and even
then I check cautiously on first contact with tools/me.

The issue might be that it isn't you doing the work. It is very
dangerous constructing a potentially lethal installation which depends
significantly on being used and maintained by only one person, that
person having specialised knowledge.

What about if your house catches fire and the fire brigade have to
break in to deal with the situation? They would presumably try to
remove power from the building as part of their duty.

Also, as we've seen only too well in the recent past, you have a duty
of care for your armed burglars and could get sent to prison if you
dare put them in any danger

If there are maintained circuits all the CU(s) should be labled with a
warning and each maintained outlet/fitting as well.

Good plan. I was under the impression that UPS outlets were supposed
to be labelled appropriately anyway?

PoP