Hi, I have the following set up that trips immediately I turn the switched FCU on. Can anyone explain why?
I had a radial circuit to bathroom (built in former garage space) to switched FCU (with 13A fuse) to electric towel radiator and all works perfectly.
I wanted to add an electronic timer between the FCU and the radiator.
A few years ago a spark tried to fit one for me but it kept tripping (even after exchanging the timer thinking it was faulty) so he gave up and fitted a blank on the box.
Recently I decided to have another go. Unfortunately the spark had cut the cables to minimum to fit them in connectors behind the blanking plate. So, firstly I extended both cables with spare lengths of 2.5mm cable (via the connectors) and wired to the new timer. The timer came on and went off as planned - Happy days
I cut the “test” cables to fit in a deeper pattress and reconnected to the timer and fitted to the new pattress.
Now, immediately I switch the FCU on it trips at the board!
Confused? I am!
I had a radial circuit to bathroom (built in former garage space) to switched FCU (with 13A fuse) to electric towel radiator and all works perfectly.
I wanted to add an electronic timer between the FCU and the radiator.
A few years ago a spark tried to fit one for me but it kept tripping (even after exchanging the timer thinking it was faulty) so he gave up and fitted a blank on the box.
Recently I decided to have another go. Unfortunately the spark had cut the cables to minimum to fit them in connectors behind the blanking plate. So, firstly I extended both cables with spare lengths of 2.5mm cable (via the connectors) and wired to the new timer. The timer came on and went off as planned - Happy days
I cut the “test” cables to fit in a deeper pattress and reconnected to the timer and fitted to the new pattress.
Now, immediately I switch the FCU on it trips at the board!
Confused? I am!