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Volt drop at the intake - Just looking to compare with sunny Thailand.

crossy
A nice easy one.


On a "standard" UK domestic supply what sort of volt drop would you expect at the intake for a load of 50A?


In an urban environment and in a rural environment.


We are dropping about 30V (from a nominal 220V) at 50A, of course the other loads in the village may already have pulled things down to 205V!!

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    On a "standard" UK domestic supply what sort of volt drop would you expect at the intake for a load of 50A?

    Given that the L-N impedance is usually < 0.35Ω (the Ze limit for PME supplies is normally 0.35Ω, and of course N and PE are the same in that case), Ohms Law says it should be less than 17.5V - often less in practice. Of course that doesn't take into account the loads in neighbouring installations...

       - Andy.
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  • 0
    On a "standard" UK domestic supply what sort of volt drop would you expect at the intake for a load of 50A?

    Given that the L-N impedance is usually < 0.35Ω (the Ze limit for PME supplies is normally 0.35Ω, and of course N and PE are the same in that case), Ohms Law says it should be less than 17.5V - often less in practice. Of course that doesn't take into account the loads in neighbouring installations...

       - Andy.
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