I have added a summerhouse to the existing supply, which is a TT system.
The earth loop impedance is too high at over 11.5 Ohms. The Earth rod impedance tests at 11 ohms.
I think I can get Scottish power to prove a TNS connection but at a minimum of £200.
Would it be worth trying to get a better TT earth (new rod etc) or just pay up.
I haven't confirmed the possibility of a TNS connection yet, and there is a complication. We are on a single overhead supply that terminates at my house but then feeds 5 or 6 other neighbours, will they all have to convert to TNS.
The earth loop impedance is too high at over 11.5 Ohms. The Earth rod impedance tests at 11 ohms.
I think I can get Scottish power to prove a TNS connection but at a minimum of £200.
Would it be worth trying to get a better TT earth (new rod etc) or just pay up.
I haven't confirmed the possibility of a TNS connection yet, and there is a complication. We are on a single overhead supply that terminates at my house but then feeds 5 or 6 other neighbours, will they all have to convert to TNS.