UK New smart meter, storage heaters now trip RCD

[Brian N]

I have just had a "smart" meter installed , and at night the electrics trips the RCD when the night storage radiator section comes on. I have had them out and they said installation was correct. I know a little about electrics (more over cautious and basic) but was suppressed when I looked at the lay out for the Night storage CU that the neutral goes through the RCD but the live goes direct - could this be a cause for the RCD to be triggered. I will have to get an electrician out to check all the wiring for the storage heaters if I cannot persuade them they have done something to suddenly make my electrics trip when that CU is on. Everything else seems to work fine. I have attached a simplified circuit diagram - electrics in the house have always been a little spaghetti junction, but never had any problems. Local electrician has always installed new stuff properly. Can anyone help? or suggest what my problem could be.

If I turn the CU for the night storage radiators off - then I get electrics 24/7 - if I turn that batch on then it pops overnight.

 

[brianmoooore]

There is something very, very wrong when a DIYer has to give step by step instructions to the "professional"!

 

[Brian N]

I did explain to the Manager of the complaints lot that it seemed very strange they would not come out until my electrics had gone off two days in a row - he said he would look into that policy, as he agreed that seemed wrong. I pointed out that if it appeared that the wiring may be at fault then they should have an electrician who could come out and double check the wiring- as clearly I had 3 people out - the first failed to wire it correctly and the following two had no idea about electrics. I doubt anything will change - still I should be able to buy a good amount of wine even after paying my electrician friend for doing the rewire - especially as I removed a wasp nest for him a few years back.

 

[brianmoooore]

I went up into a loft on a new build once when the plumber was testing his newly installed heating system. Vent pipe over the header tank was gushing full bore, and splashing water everywhere.
Had to take a sheet of cardboard and a black marker pen, and draw out for him how he should have connected the tank. Pretty sure he didn't understand a word I said, but he changed it to my diagram anyway.