Advice for Problem Solving RCD controlled Circuits
If the RCD Keeps Tripping:
- Turn off all circuit breakers (CBs) that are controlled by the RCD that is tripping - Note if there are appliances that get upset by power being shut off and restored repeatedly, turn these off until after the problem has been sorted eg a fridge or freezer.
- Reset or turn the RCD back on, if it trips with the CBs turned off then there is either a wiring fault or the RCD is faulty, you will need to call a licenced electrician
- Turn on each circuit one at a time, when the RCD trips, that circuit is the one that has the problem.
- Repeat the above step until all circuits have been checked, only leave off the circuits that cause the RCD to trip.
- Find out which appliances and or lights (etc) that do not have power, switch off or unplug all of these.
- Turn on the affected circuit, it will hopefully not trip the RCD. (If it does there is either something else connected to the circuit that you have not found or a wiring fault on that circuit - if it is a wiring fault you will need your licensed electrician!)
- Try each appliance (or light etc) until the RCD trips, that is then your problem causing device that needs either repaired or replaced (appliances these days are often cheaper to replace than repairing - if this is the case please try to recycle the old appliance).
- Switch back on any other appliances that were switched off for testing eg your fridge.