6M Parasene soil warming cable problem

[fishpond]

Hi
Has anybody had these constantly tripping an RCB, I have gone through 3 in 3 years, always in the middle of winter ie Feb?
It is bedded in sand in a 4ft x 2.5ft plastic tray with another tray fitted in and sealed around the edges with silicone to stop any ingress of water.
A large open propagator.
Fitted with a thermostat, always has power on even in Summer.
Really annoyed and angry.
Can't do anything about it tonight.
It will have to wait until tomorrow.

[fishpond]

Now sorted----power supply cable had overheated.
Good excuse to buy a super duper propagator though.

[Bigmallly]

Glad you got it sorted.