Hi. Could you please advise on whether 63A RCDs are acceptable when the service fuse is 80A? I have the following setup: 80A service fuse - 100A main switch - 63A RCD x2. Each RCD has three circuits. First RCD: Shower 40A + Sockets 32A + Lights 6A. Second RCD: Cooker 40A + Sockets 32A + Lights...