- Joined
- 30 Jun 2003
- Messages
- 3
- Reaction score
- 0
- Country
I have installed an electric shower 9.5 kw using 10mm2 cable on a run of approx 12 metres and 40amp MCB. When I turn on the isolating switch eveything seems ok but as soon as I turn the shower on the RCD trips. I have added an additional earth cable from the shower to the consumer unit (Seaboard told me to that on a previous installation at different house) and also cross bonded to the water pipes in the bathroom.