wrote:
On Feb 15, 2:41�pm, wrote:

[original post snipped]

Here are photos of the misperforming parts.

The whole consumer unit is he

http://i250.photobucket.com/albums/g...e/100_1145.jpg

The strip that fails is he

http://i250.photobucket.com/albums/g...e/100_1146.jpg

The button that flips up is on the far left.

Thanks again everybody.

Edward

RCCB = RCD, and I gather that's whats tripping. The problem is
RCD nuisance tripping. The wiki article John pointed to would be a
start. In short there are probably 2 issues:
1. You've got a lot of equipment on the RCD that shouldnt really be
on it, and that makes your setup liable to these kind of problems.
Its not verboten to have it this way, but it is a recipe for nuisance
trips.
2. Some appliance somewhere may be electrically slightly leaky -
but with all that kit on one RCD that isnt necessarily so, the setup
is a bad design.

Solutions:
1. Resistance test all appliances, from E to L+N. A multimeter will
do for a start, they arent perfect but usually pick up the offender
if
there is one. Write down all the R readings, and the lowest Rs are
your prime suspects. Theres a fairly good likelihood this will solve
the current problem - but you will still be left with an installation
where this is liable to recur in future.
2. Reconfigure your CU layout to move items that dont need to be
on an RCD to the other non-RCD supply.
3. It is possible as an alternative to change the RCD and MCBs,
but depending on the details this will either breach regs or be
costly.
9x RCBOs = about £300.

A separate electrical feed for the f/f would have been a good idea,
preferably not from the RCD, but if the decor's all finished its poor
timing to put one in now.


NT