21 Feb
2007
21 Feb
'07
4:44 p.m.
On Wednesday 21 February 2007 13:42, Adrian Graham wrote:
It is. 'Residual Current Device'. The old name was ELCB (Earth Leakage
Circuit Breaker)
On 21/2/07 02:40, "Tony Duell" <ard
at p850ug1.demon.co.uk> wrote:
Assuming that an "RCD" is what we call a GFI/GFCI over here, I'd suggest
I realyl would want to know exactly how it's
tripping the mains.
Perhaps run it on a circuit that doesn't have an RCD.
I'd love to, but in a rented house and an electronic workshop that's
under strict H&S rules I'm not going to be able to find one. Even my
weekend home has an RCD. either lifting the ground, or (preferably) connecting
the ground to the
neutral side of the mains (make up a sepcial adapter cord to do this),
and see if it still trips the breaker.
NO!!! UK mains distribution is significantly different to US practice. We
don't have a sparate distribution transoformer for each house (there are
no 'pole pigs' over here). Earth and neutral are not, in general, linked
at the house's distribution board.
What I would do at this point is remove all mains filter capacitors from
the PSU -- if there are any from live to earth on the PSU PCB, desolder
them. If there';s a mains filter can, remove it and connect mains
directly to the PSU PCB (but keep the intenral circuit breaker in
circuit). If the machine works propeerly now, you'll know the problem was
due to an earth current. Then you can trace where that's coming from.
GFIs and old (or just "big" computers) generally don't mix well.
Agreed.
-tony