Doing a refurb at the moment. I'm doing the first fix electrics with an electrician doing the final fix and signing off.
A new fuse box meeting 17th edition is going in so all circuits will be protected by RCDs.
I working on the basis that -
Main bonding - at the Consumer Unit the gas and water supply need to be connected. This should now be done with 16mm cable. The boiler, gas meter and CU are all in the same cupboard so I'm assuming connecting them together there is fine.
However, I'm a bit confused about the requirements for cross bonding/earthing elsewhere. At present there is 6mm cable looping between the hot and cold supplies in the bathroom, on to the kitchen and then back to the CU. My reading of the 17th edition is that cross bonding is no longer required provided the main bonding is in place and RCDs cover all circuits. I'd have thought that there is no harm in tidying this up/leaving it in place but the electrician is talking about replacing all of this with 16mm cable.
This is going to be expensive and time consuming so I don't want to do it if it's not required. Any views here?
A new fuse box meeting 17th edition is going in so all circuits will be protected by RCDs.
I working on the basis that -
Main bonding - at the Consumer Unit the gas and water supply need to be connected. This should now be done with 16mm cable. The boiler, gas meter and CU are all in the same cupboard so I'm assuming connecting them together there is fine.
However, I'm a bit confused about the requirements for cross bonding/earthing elsewhere. At present there is 6mm cable looping between the hot and cold supplies in the bathroom, on to the kitchen and then back to the CU. My reading of the 17th edition is that cross bonding is no longer required provided the main bonding is in place and RCDs cover all circuits. I'd have thought that there is no harm in tidying this up/leaving it in place but the electrician is talking about replacing all of this with 16mm cable.
This is going to be expensive and time consuming so I don't want to do it if it's not required. Any views here?