Plug in RCD warm

Feb 25, 2020 Last reply: 6 years ago 6 Replies

Is it normal for plug on end of flex type RCD to have a warm spot?



This one has been in the tripped position for some hours after a 10 second power cut caused it to drop out and on going to reset it noticed the warm spot. Not enough to worry just surprised there would be any current flowing to produce any . No neons or other lights on to warm it either.



GH


Check for loose connections & tighten. If nothing apparent or if there are visible burn marks, ditch it.

It can only get worse & may start a fire.

AIUI it depends on design of the RCD. I have plug-in RCD adaptors that do that. They include one where Contactum even warn that they do.

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Its normal for a plug on *any* flex to get warm at full chat.

13A through a 13A fuse is bound to make it nearly hot enough to melt, if its gonna work as a fuse at all...

Its also normal for the flex to get hot, as those of us who have run multiple power tools and a kettle through a coupled up reel of extension cable know to our cost..

Ahem, I snipped the bit where the OP said there was no load ;)

Yes, if it had been in use in such a situation I would have put it down to that though in the situation it is used for it never carries more than 5 amps. This warm spot was with it tripped though so no load,and well away from the pins which were cold. Reckon it must come from one of the windings passing a small current even while tripped.

Funnily enough one of your fellow flyboys asked a similar question about a very similar unit.

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GH

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