Anyone help me with this one ?

Recently bought a "new" AEG double oven/grill cooker off ebay, at a
small fraction of its retail cost, no gtee/returns, usual risks etc

The catch is, when plugged in/installed as per AEG documentation, my
mains RCD keeps outing.

It does this:-

i) When I switch the top oven on
ii) After I've switched the grill onto full, & the element has warmed
up.

The bottom (fan) oven seems ok.


Taking resistance readings with a digital multimeter between one of
the offending element poles
and the cooker case/earth (after disconnecting the relevent element
poles from any other cooker circuitry) I find that

i) for the grill element it reads 1.5Megohms (when cold - probably
leaks more as it heats up, hence errors) and

ii) for the top oven element it's an alarming 0.5 Megohms.

For the fan oven it was about 2 megohms.

I noticed that for my previous Ariston cooker - soon to be ebayed
(??!!??) - the earth leakage resistance was higher than the meter
could register.

What would one expect a new element, correctly fitted (not wired in)
to read in terms of earth leakage ?

I don't want to buy & fit another & have the same problem.


Is my RCD over-sensitive ?

I read somewhere that cookers are notorious for high earth leakage.


The cooker had previously been supplied to a customer (I think) &
returned without any signs of use, utensils pristine & bagged up. The
cooker looks like it's been handled heavily in it's short life, dents
to externals, minor cosmetic issues etc.

Any comments, aside from the obvious "back to ebay" ones would be
welcome!

NGCook