On Jul 5, 9:31*pm, "Peter" wrote:
A five fused fusebox in friends garage (non rcd box) is supplied from an
rcd'd box in his house.
The garage box supplies, 2 fountain pumps
1 cesspit pump
garage doors, sockets and lights
pool pump etc
And
auto gates

On friday his gates tripped the rcd (continues to do so) Mr autogateman
finally blames one motor even though his meter finds no fault.

when the rcd was put back on neither the cesspit pump nor the fountain pumps
worked but garage doors sockets and lights ok

finally after tripping all switches in the garage box and turning on one by
one all starts to work again (not auto gates)
until the next day when cesspit overflows.

pump extracted, floats shaken a little, nothing. cesspit pump box (seperate
from fuse box) has a tripper *switch off/on...pump works.

The question is are all these things related? If not are pumps and a motor
really all expiring at the same time? Is there any fault in a fusebox/supply
that can display these problems.
Why can I switch the fountain pumps on then nothing, change nothing other
than having all other trippers off then switch it on again and they work.

House is less than 10 years old.

Many thanks

Peter

http://www.wiki.diyfaq.org.uk/index.php?title=RCD
The RCD trips on the total leakage current of all appliances. To find
out whats causing it you need to test each appliance for leakage. You
can crudely do that with a mutimeter, good enough to usually find the
culprit.


NT