Hi Looking for a wee bit help here
I've installed a 10.5kw Gainsborough shower using 16mm cable as it is a wee bit of a long run. There is a 50A circuit breaker in the RCD side of the split consumer unit. The RCD is rated at 80A 30ma. Also on the RCD side of the CU are the cooker (32A), and two ring mains at 32A each. When switching on the pull switch in the bathroom everything is fine. As soon as the shower on/off switch is turned on even at the lowest temperature the RCD trips. Tried switching off other circuits on the RCD side but the same thing happens. I meggered tail cable between cores and earth and it's ok. The bonding on the pipework has been renewed too. I'm convinced it's the shower any ideas on how to check this or any other ideas as to what could be the cause. (The CU is a WYLEX).
Many thanks
Killeavy
I've installed a 10.5kw Gainsborough shower using 16mm cable as it is a wee bit of a long run. There is a 50A circuit breaker in the RCD side of the split consumer unit. The RCD is rated at 80A 30ma. Also on the RCD side of the CU are the cooker (32A), and two ring mains at 32A each. When switching on the pull switch in the bathroom everything is fine. As soon as the shower on/off switch is turned on even at the lowest temperature the RCD trips. Tried switching off other circuits on the RCD side but the same thing happens. I meggered tail cable between cores and earth and it's ok. The bonding on the pipework has been renewed too. I'm convinced it's the shower any ideas on how to check this or any other ideas as to what could be the cause. (The CU is a WYLEX).
Many thanks
Killeavy