I'm gathering the bits for a 10.8 kw electric shower installation, which, when I've got everything, I'm then going to ask a part P registered electrician to connect.
So far, I've run the 10mm cable from the consumer unit to the shower room, and will be finding an isolation switch for outside the room, and an RCD
The CU main switch is rated at 65A, and is recent (within the last 8 years or so) as is the wiring of the house. I'm confident in the general quality of the house electrics.
Am I right to assume that the 'trip switches' in the CU are MCB's and I just need to ensure that there is a 45A MCB available within the CU?
I'm looking for a cheap RCD for the shower and am wondering if a 63A RCD would be appropriate or do I need to go for a 45A?
(My thinking is that as long as the cut out rating is low enough, say 30mA, then the current rating needs to be at least high enough, but doesn't matter if it's too high?)
thanks for your help
Stephen
So far, I've run the 10mm cable from the consumer unit to the shower room, and will be finding an isolation switch for outside the room, and an RCD
The CU main switch is rated at 65A, and is recent (within the last 8 years or so) as is the wiring of the house. I'm confident in the general quality of the house electrics.
Am I right to assume that the 'trip switches' in the CU are MCB's and I just need to ensure that there is a 45A MCB available within the CU?
I'm looking for a cheap RCD for the shower and am wondering if a 63A RCD would be appropriate or do I need to go for a 45A?
(My thinking is that as long as the cut out rating is low enough, say 30mA, then the current rating needs to be at least high enough, but doesn't matter if it's too high?)
thanks for your help
Stephen