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Volt drop % - Private Supply Def

Peter Hartley

Good day everyone 

Public supply Volt drop 3% Lighting 5% Power.

Private supply Volt drop 5% Lighting 8% Power.

Define private supply?

Option 1 - HV public grid supply to privately owned transformer. Is LV supply private?

Option 2 - Main source of supply is from Privately owned source of generation such as PV, diesel/gas/nuclear generator?

Why is this not defined in BS7671?

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  • 0

    Both.

    I imagine the point is that if it is a private supply, as the owner of the transformer/PV/etc., the user can turn up the wick if the voltage drop is getting excessive.

  • 0 in reply to Chris Pearson

    Thank you, that does make sense.

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