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Unsure on flat rewire

goldenboy1818
  • Hi all would really appreciate any help you guys can please give me.

Iv come to rewire a flat and facing a few issues would like a bit of guidance with.

Firstly it's fed via a 60amp isolator and 16mm twin and earth , no rcd protection. I can not see the cable run. Is this ok for me to reuse assuming it tests out ok ? Normally would be a swa. It also has a 30amp 6mm supply as a off peak supply again in twin and earth.

Now assuming those supplies are ok to use, the next issue arises. The customer then wants electric shower, cooker, induction hob, electric heaters and peak supplied immersion heater.

I think the shower is going to be a no go, and they will have to have new storage heaters with off peak only supply as they currently have. Keeps the load down on the peak supply. Running a new upgraded sub main is not possible.

Really appreciate any advice guys. Thank you

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    It makes little difference which supply the immersion is on. Just fit a timer and they can set it to the off peak times anyway and boost it in the day if they want. 

    Depends on the metering system - on "modern" systems (including E7) that have a single dual-rate meter yes that's true, but some older systems (e.g. E10 in my area) often had two separate meters and a timeswitch on the off-peak supply - so anything on the peak supply was charged at full rate whatever time it was used.  So might be worth double checking what's in the basement.

    induction hob 27amp cooker 13amp...(I know we can apply diversity here but still high)

    Is the "cooker" just a single oven (on a 13A plug) - if so check that rating, oven elements are often only 2kW - together with a 6.2kW hob that's less than 18A after diversity.

       - Andy.

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  • 0

    It makes little difference which supply the immersion is on. Just fit a timer and they can set it to the off peak times anyway and boost it in the day if they want. 

    Depends on the metering system - on "modern" systems (including E7) that have a single dual-rate meter yes that's true, but some older systems (e.g. E10 in my area) often had two separate meters and a timeswitch on the off-peak supply - so anything on the peak supply was charged at full rate whatever time it was used.  So might be worth double checking what's in the basement.

    induction hob 27amp cooker 13amp...(I know we can apply diversity here but still high)

    Is the "cooker" just a single oven (on a 13A plug) - if so check that rating, oven elements are often only 2kW - together with a 6.2kW hob that's less than 18A after diversity.

       - Andy.

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