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

AJJewsbury:

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.

Not just PME supply's very recently a few weeks 8 weeks to be precise had to have the DNO out to re attach the main earth to the cable sheath as part of the process the engineer did an earth loop test which showed an impedance of 0.238 ohms   don't know if 5his is a typical reading for a domestic intake whatever there would be a lot of amps in a short circuit fault. Let's hope that never happens

AJJewsbury:

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.

Not just PME supply's very recently a few weeks 8 weeks to be precise had to have the DNO out to re attach the main earth to the cable sheath as part of the process the engineer did an earth loop test which showed an impedance of 0.238 ohms   don't know if 5his is a typical reading for a domestic intake whatever there would be a lot of amps in a short circuit fault. Let's hope that never happens