The installing contractor is independent from the checking contractor. Both appointed by the Principal Contractor who built the loft.
What about armoured cable. I don't think this is necessary as it is within the house only?
The two boards have been installed. Lighting and power to the loft is separate to the rest of the house. They run from a designated fuse 40amp on the main board. Loft only used for PC, TV etc. and bathroom fan. Installed not by me :( , i'm checking as an NIC IEE man wants a separate...
in 17th Ed IEE, can you run a sub RCD board from a fuse on the main RCD board. The sub board feeds a 30amp ring (single room & bathroom) and 3No lights (6amp) cable connecting both boards is 10mm twin&earth. Thanks,