No sorry don't believe that. it is probably that there really is an earth.
Did not say what sort of switch this was. We have ours outside the room and
it has been known for there to be a slight leak from one conductor to the
earth point on the metal box in the wall when the switch was screwed don.
Enough to occasionally pop the breaker and to make the light appear to be
on very dimly with occasional bright flashes. This was some years ago and
some sleaving cured the problem, however I'm still suspicious of a switch
leak.

Got a High impedance metar?
Brian

--
From the Sofa of Brian Gaff Reply address is active
"Davey" wrote in message
...
On Fri, 29 May 2015 17:06:15 +0100
GB wrote:

Flashing bathroom light - whilst switched off!

This is 2 yrs after a complete rebuild. Recently, the bathroom light
has started to flash whilst switched off. It flashes very briefly
once or twice a second. It's a fluorescent 2D fitting, two wires, no
earth.

I suspect one of three reasons:
a) Problem with the switch that allows a small amount of current
through. Seems unlikely. The switch looks fine, and the light
switches on and off okay.
b) Water ingress into the fitting. But this looks fine. No sign of
water damage. And, in any case, it's switched off, so it should have
no live feed. (Yes, I know that live and neutral sometimes get
muddled up, but even so where's current going to without an earth?)
c) Water ingress into the wiring somewhere where I can't see it. This
is in a flat, so $deity knows what the person in the flat upstairs
lets overflow.

Any help would be appreciated.





It's a poltergeist. My mother-in-law had one, it would randomly turn
her bedroom light on at night. It never harmed her.

--
Davey.