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Shower and undersink water heater.
Former Community Member
I have a property that has 6mm mains swa cable coming into the consumer unit via an RCD isolation switch. The home has a 7.2kw electric shower and I wanted to add a 7kw under sink water heater. So as to prevent overheating of the main cable and tripping of the main incoming fuse which is just 40 amps, could I put a 32 Amp 3 Pole Change Over Switch ahead of the two six mm cable wires which would be serving the shower and the water heater. Therefore negating overloading the main wire coming into the home by allowing only one of the appliances to be used at a time.
The EICR needs to be done by someone who can understand it, and part of that is the instructions and description information provided with the installation, but yes, no reason why an EICR would be a problem if it is done well. If the signal wiring going back from the shower to the contactor is only protected by the 40A breaker then it should probably be fused down to avoid raised eyebrows.
The EICR needs to be done by someone who can understand it, and part of that is the instructions and description information provided with the installation, but yes, no reason why an EICR would be a problem if it is done well. If the signal wiring going back from the shower to the contactor is only protected by the 40A breaker then it should probably be fused down to avoid raised eyebrows.
