zoothorn Posted October 8, 2020 Share Posted October 8, 2020 Ive just had a pro electrician in to hook up my extention (2 rooms, 3 spurs: sockets/ downlights/ smoke alarms) wiring into an RCBO unit > into my mains. All tested & docs sent to Buildsing Control. The wiring, sockets, lights etc done by a competent other, the pro happy with work. 1st thing I plug in, a drill to do make my steps/ finish off the room.. I do one hole, but pick up to do 2nd it doesn't start. RCBO tripped. Same happens time after time, a few secs/ or sometimes 30secs I can do maybe 3 holes. But go to use & RCBO has tripped, time after time. I try my other drill, exactly same happens. Both drills excellent & never an issue over 10 years. I use extention from adjacent room (main part of house/ separate circuit).. both work fine. Pro comes back, tests the socket I used, 25mA & trips.. as it should be he says/ no fault. Also tests rest of house.. 27mA trips/ fine. He says it can only be the drill. But I told him I tried 2x, & ruled them out catagorically at fault if both work fine via an extention from adjacent room. This is concerning: I have routers/ similar motor unit tools to use in my new workshop. impossible to work/ use it if constantly tripping. thx zoot. Link to comment Share on other sites More sharing options...
ToughButterCup Posted October 16, 2020 Share Posted October 16, 2020 And so what is your question? Link to comment Share on other sites More sharing options...
PeterW Posted October 16, 2020 Share Posted October 16, 2020 Is the old part of the house on RCBO or MCB...? Link to comment Share on other sites More sharing options...
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