This has been going on since before Christmas, there was an old Crabtree consumer unit with an upfront 30 mA RCD that started tripping frequently, on occasions several times a day.

The new RCBO consumer unit has an occasional trip on a different socket circuit, this one supplies a few sockets in a garage conversion, but there had not been a trip for over a month until a few days ago.

So I was again looking for reasons why there have been trips, but then it appears there should be a trip when there isn’t and this circuit tested out okay.

I came home feeling like I had fried my brain. the two fan heaters I used to apply additional load are both double insulated, the kettle isn’t as good as it could be, all the RCBOs are double pole so the rest of the installation is isolated when they are off, I check for shared neutrals and so on and so forth.

This has been going on since before Christmas, there was an old Crabtree consumer unit with an upfront 30 mA RCD that started tripping frequently, on occasions several times a day.

The new RCBO consumer unit has an occasional trip on a different socket circuit, this one supplies a few sockets in a garage conversion, but there had not been a trip for over a month until a few days ago.

So I was again looking for reasons why there have been trips, but then it appears there should be a trip when there isn’t and this circuit tested out okay.

I came home feeling like I had fried my brain. the two fan heaters I used to apply additional load are both double insulated, the kettle isn’t as good as it could be, all the RCBOs are double pole so the rest of the installation is isolated when they are off, I check for shared neutrals and so on and so forth.