Hi,
i'm currently working on a project where 10 flats are being built on one side of an old silk mill. We are having a new cable put in and the origin upgraded etc. This type of work has to be done by NERS registered electricians so an outside company recommended by the DNO came yesterday and asked for what each flat will be using current wise so they can do a cable calc for the supply, which is the following.
Boiler 9kw 50am breaker, ring 32a, ring 32a, oven 6.2kw 32a, heating 20a, lights 6a
This is then multiplied by 10 for the ten flats. Looking at diversity tables theres a strong possibility diversity cant be applied unless we could use column 2, heating & power - If not the cable size is going to be ridiculous as it needs to be in trunking, ratings go down etc.. What are peoples thoughts?
i'm currently working on a project where 10 flats are being built on one side of an old silk mill. We are having a new cable put in and the origin upgraded etc. This type of work has to be done by NERS registered electricians so an outside company recommended by the DNO came yesterday and asked for what each flat will be using current wise so they can do a cable calc for the supply, which is the following.
Boiler 9kw 50am breaker, ring 32a, ring 32a, oven 6.2kw 32a, heating 20a, lights 6a
This is then multiplied by 10 for the ten flats. Looking at diversity tables theres a strong possibility diversity cant be applied unless we could use column 2, heating & power - If not the cable size is going to be ridiculous as it needs to be in trunking, ratings go down etc.. What are peoples thoughts?