dangermouse wrote: ↑Thu Nov 10, 2022 7:18 am
As far as I know there are two bits of paperwork you're legally obliged to do - send a G98 notification to the DNO, and obtain a BS7671 certificate for the wiring modifications. I'm going through the same process myself right now.
The BS7671 probably won't be an issue until you come to sell the house (?) but if you've had an electrician install your system then I would chase him for it otherwise you'll have to pay someone else for one at a later date. And many are reluctant to certify someone else's work.
The G98 you can definitely do yourself, there are threads on this forum from people who have done the same.
That's as I understand it too, with the proviso that lodging the electrical installation certificate on the building control database, to show compliance with Part P, only applies in England and Wales (Scotland doesn't have Part P I think). The DNO notification applies for the whole of the UK I think.
The Part P thing in England and Wales is just for notifiable electrical work, not everything. Notifiable work includes installing new circuits like a new inverter, car charger or outdoor socket, replacing a consumer unit, etc. Just doing things like fitting new light fittings, sockets, minor wiring alterations (outside kitchens and bathrooms) or replacing existing things with new (for example swapping a failed inverter for a new one) doesn't normally require part P approval, AFAIK.
All the work needs to comply with BS7671, anywhere in the UK, and all electrical work normally requires some sort of certification, ranging from a minor works certificate for something like replacing a socket to a full electrical installation certificate for something like a new circuit or consumer unit change. Unless the work is notifiable under Part P, then the certificate only needs to be given to the customer, although I had to chase to get a copy of one last time I had work done. The reason I chased it was because the lack of any certificates for our old house was picked up by our buyers solicitor when we sold it, I needed to do a periodic inspection and give that to them to keep them happy. I think this is a relatively new thing, as it didn't come up when we moved house 15 years earlier.
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