When the RCCB trips: Checklist for possible causes

01 ———————– Have changes been made to the system, e.g. have new lamps or sockets been installed? If so, there may be a wiring fault or loose terminals. 02 ———————– Could the weather be a factor? A lightning strike can trip the switch due to greater surge currents. A slow-blow residual current circuit-breaker (KV design…