I have had a new Hager CU fitted - done at the same time as a Solar installation. All MCBs, RCDs are Hager. This is a split load CU - 7 MCB's on one side covered by a 30 ma RCD (no problems on this side) and 6 MCB's on the other side covered by a 30 ma RCD (RCD has tripped twice on this side).
On the side that trips I have :-
2 lighting circuits both on 6A MCB
1 sockets circuit on 16A MCB
1 Solar circuit (I think input from inverter) on 20A MCB
1 sockets circuit on 32A MCB
1 cooker circuit on 32A MCB
The RCD has tripped 3 times since it was fitted about 6 weeks ago. No MCB's trip, just the RCD. The RCD trips appear quite random - I can't pin it down to any event.
Can anyone suggest reasons why this could occur? Can it be caused by a faulty appliance?
When the RCD has tripped, it is possible to push the switch back up again within a few minutes - it trips straight away if I attempt to push switch up within a few seconds of the trip occuring.
The house is 1960's built. The old CU was fuse wire type.
Just wondering how to detect the problem? and possible solutions
1) can a less sensitive RCD be fitted or will that be potentially dangerous?
2) if RCBO's fitted instead of MCBs, then should the RCD be taken out? (I think this should then just trip the citcuit where the fault is so it would at least pin it down - is it OK just to replace MCB's with RCBO's on 1 side of the box?)
I an not an electrician and would be very grateful for any pointers here...
All work was (and will be) carried out by qualified electricians and I have received the NAPIT cert. for the install.
sorry about the lengthy post but I wanted to include as much info as poss..
thanks in advance for any help......
On the side that trips I have :-
2 lighting circuits both on 6A MCB
1 sockets circuit on 16A MCB
1 Solar circuit (I think input from inverter) on 20A MCB
1 sockets circuit on 32A MCB
1 cooker circuit on 32A MCB
The RCD has tripped 3 times since it was fitted about 6 weeks ago. No MCB's trip, just the RCD. The RCD trips appear quite random - I can't pin it down to any event.
Can anyone suggest reasons why this could occur? Can it be caused by a faulty appliance?
When the RCD has tripped, it is possible to push the switch back up again within a few minutes - it trips straight away if I attempt to push switch up within a few seconds of the trip occuring.
The house is 1960's built. The old CU was fuse wire type.
Just wondering how to detect the problem? and possible solutions
1) can a less sensitive RCD be fitted or will that be potentially dangerous?
2) if RCBO's fitted instead of MCBs, then should the RCD be taken out? (I think this should then just trip the citcuit where the fault is so it would at least pin it down - is it OK just to replace MCB's with RCBO's on 1 side of the box?)
I an not an electrician and would be very grateful for any pointers here...
All work was (and will be) carried out by qualified electricians and I have received the NAPIT cert. for the install.
sorry about the lengthy post but I wanted to include as much info as poss..
thanks in advance for any help......