My house had a new consumer unit fitted in 2005 it's partly fitted with RCBOs and partly with MCBs it was installed by the DNO who are SSE in this area bearing in mind the year it was installed are the rcd fitted likely to be electronic type or plain electromechanical ones I'm asking out of curiosity because if ever there's a fault in my workshop ( for this read that I make a mistake or an error when experimenting) usually the house RCD trips despite me having an electronic plug in one on my test bench supply which I think should fire first ide really appreciate your wise words on this thanks x Kelly
I went to a house with RCD issues, two distinctly different problems with the same cause.
The installation is TT and has solar PV with battery storage, a ham radio station, hot tub and all sorts of other electrical toys.
Lots of DC currents plus rubbish electrical installation work.
The upfront 100 mA S-Type RCD kept tripping, the 30 mA RCD downstream of it “protecting” the solar PV and battery inverter was being blocked and would not trip, both issues were apparently being caused by the DC leakage current with both RCDs being Type AC.
The customer was more concerned about the RCD that kept tripping than the one that would not trip, in fact I seemed to be the only person concerned about the one that would not trip when I raised my concerns with the customer and the installers of the PV and battery system about the one that didn’t trip.
I went to a house with RCD issues, two distinctly different problems with the same cause.
The installation is TT and has solar PV with battery storage, a ham radio station, hot tub and all sorts of other electrical toys.
Lots of DC currents plus rubbish electrical installation work.
The upfront 100 mA S-Type RCD kept tripping, the 30 mA RCD downstream of it “protecting” the solar PV and battery inverter was being blocked and would not trip, both issues were apparently being caused by the DC leakage current with both RCDs being Type AC.
The customer was more concerned about the RCD that kept tripping than the one that would not trip, in fact I seemed to be the only person concerned about the one that would not trip when I raised my concerns with the customer and the installers of the PV and battery system about the one that didn’t trip.
