On Wed, 13 Feb 2019 09:19:03 +0000, T i m wrote:

On 13 Feb 2019 01:33:14 GMT, Bob Eager wrote:

On Tue, 12 Feb 2019 23:36:41 +0000, Harry Bloomfield wrote:

wrote :
The suggestion re carbon in the motor could well be worth looking at.
I reaplced the brushes in the motor with new ones about 3 months ago,
so it could be 'dusty' in there. That said, it trips even when the
control knob is set to somethign that doesn't immediately run the
motor.

Be aware that a neutral to earth leakage can also cause a trip, not
just a live to earth leakage - many people forget this. So even an
item turned off/ live disconnected can still cause an RCD to trip if
it is plugged in, yet turned off.

Doesn't really apply to the OP. Unless there is a magic earth/neutral
connection when unplugged.

But how would that apply to:

"Out of the blue, my faithful old Hoover washer tripped the RCD on my
consumer unit.

After reset, it'll stay untripped when the machine is powered on at the
socket, but as soon as I turn the control to anything other than 'off'
the RCD trips."

Well, he also said:
"The strange thing is that I've left the washing machine unplugged and yet
the RCD still tripped a couple more times"

The WM *must* be playing a part, even if it isn't the only player?

I think so too! There is something very marginal, and the WM may have a
minor leak (e.g. heating element).

--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor