Should the RCD neutral terminal is around the remaining, go RCD on the remaining and reconnect power cables. This fashion you are going to even now be capable to utilize the busbar. From the bottom of RCD run a cable to your neutral bar. We should have two outgoing cables https://socket-and-switch-fitting71000.timeblog.net/71135421/5-tips-about-consumer-unit-installation-london-you-can-use-today