Hi, I have just finished the electrics on my extension and loft and will soon be having it checked at first fix. I am stuck on the earth bonding that is required on my house. There is 10mm earth cable going from the gas box to the consumer unit and 10mm earth going from the mains water supply pipe to the meter outside. I realise that copper pipes may need bonding. The house has a mix of plastic and copper piping. Could anyone give me a clue what to do next to complete the bonding.