If you want them to come and measure it for you, and there is no fault, they will charge, and considerably more than a normal sparks.
If you want them to read you the book value over the phone it will be “less than 0.3 ohms ” for PME or “less than 0.8 ohms ” for TNS or ‘" it’s up to you" if you have TT.
Note that that “less than 0.8 ohms” will probably co-exist with a PSSC of ‘up to 16kA’ as far as the book is concerned, while in reality there will be a lower PSCC where the cable resistances are higher.
If you want them to come and measure it for you, and there is no fault, they will charge, and considerably more than a normal sparks.
If you want them to read you the book value over the phone it will be “less than 0.3 ohms ” for PME or “less than 0.8 ohms ” for TNS or ‘" it’s up to you" if you have TT.
Note that that “less than 0.8 ohms” will probably co-exist with a PSSC of ‘up to 16kA’ as far as the book is concerned, while in reality there will be a lower PSCC where the cable resistances are higher.
