Brian Gaff wrote

More likely to be a pin hole in a hose near some electrical part.

Nope, because the RCD still trips occasionally with the washer not even
plugged in.

After all those internal hoses do get a pounding on spin you know. I'm
rather intrigued by the memory effect of your cut out device myself.

The explanation is obvious, faulty RCD, faulty wiring or some other
device that is leaking not quite enough to trip the RCD and the
washer turned on adds enough more of a leakage to trip the RCD.

Are we totally sure that the device itself is not suddenly ultra
sensitive. Any chance of swapping one from another circuit to prove its
the appliance given the trips when the device is unplugged.

Better to unplug everything else plugged in first
to check if that’s what is leading, not the washer.

"Andy Burns" wrote in message
...
wrote:

I have electrical knowledge and multimeters etc. Just seeking opionions
on what might be most likely.

could be leakage of the mains filter in the machine, if you test on the
plug of the washing machine, what impedance do you see across E&L, and
E&N ... megger would be better than a multimeter if you have one.


Could be a chafed cable connection e.g. neutral to earth (if it was live
to earth or to neutral it would be fuses or MCBs tripping)