OP
MDJ
Hi, ive just fitted a crabtree loadstar RCBO to my split load consumer unit, to supply my smoke detector circuit. When detectors are connected to a MCB they work fine. When connected to the RCBO it trip one of the RCD's. Any advice please?
the neutral lead from the rcbo into the wrong neutral bar? anyhow as mentioned why stick a smoke detector/s on a RCD?