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Old incomer connected to four 3 phase cutouts help

Simon M
Hi all,


I have a very old incomer entering the building that then feeds to 4 x 3ph cutouts. You can see two of the 3ph cutouts in the pic.
9f8642aebed8db60e40f7a2578ffd3a3-original-02.jpg


The incomer says on it  - BI Callender's - 4E 150 x 3. I assume this means 3 x 150 Amps? Please do correct me if I am wrong.


1. What is the maximum power I can draw from this system?


2. If each of the 4 Three phase cutouts were loaded with 100 Amp fuses and I was to pull close to that from each fuse. what would happen to the incomer as this would equate to 1200 Amps!


3. Is connecting 4 3ph cutouts to this old beast a reasonable thing to do? Or is it ridiculous?


Many thanks

Simon
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  • Former Community Member
    0 Former Community Member
    The intended use is education, arts spaces, maker spaces, small studios etc. So no dwellings.


    Will their rent include electricity, as if not metered and charged to them, everything will be left switched on............?


    As to what the DNO will supply, it will be up to you to ask for an Authorised Supply Capacity (ASC) and they will within reason supply whatever you ask for, at a price naturally. But good luck on asking them for what they will presently supply you with..............


    Regards


    BOD just back from site visit to client who wants a supply to a proposed dwelling 520 m from his existing meter which in turn is 100 m from 15 kVA HV Tx.
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  • Former Community Member
    0 Former Community Member
    The intended use is education, arts spaces, maker spaces, small studios etc. So no dwellings.


    Will their rent include electricity, as if not metered and charged to them, everything will be left switched on............?


    As to what the DNO will supply, it will be up to you to ask for an Authorised Supply Capacity (ASC) and they will within reason supply whatever you ask for, at a price naturally. But good luck on asking them for what they will presently supply you with..............


    Regards


    BOD just back from site visit to client who wants a supply to a proposed dwelling 520 m from his existing meter which in turn is 100 m from 15 kVA HV Tx.
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