UK Isolated, noise-free electrical ground

[mike the sparky]

Has anyone come across this before -
The LC/TQ electrical outlets must have an isolated, noise-free electrical ground that is
connected to the main earth ground for the facility. Noise-free typically mean Total Harmonic
Distortion (THD) more than 3% is not acceptable.

Distance of 80m, so do I supply locally and bring a separate earth cable back 80m or,
A dedicated 3 core cable 80m from the main plant room. (preferred option).
2kW power, so not big at all.
And do I take the cable and split the cpc to connect to the main earth bar?

Great site

 

[James]

MK K1257WHI Logic Plus 1gang 13Amp Non Standard DP Switch Socket

Buy online MK K1257WHI Logic Plus 1gang 13Amp Non Standard DP Switch Socket

www.edwardes.co.uk

cpc to one earth connection in the socket that feeds back to the db it is fed from like any normal circuit
then a dedicated clean earth from MET to the clean earth pin on the socket.