I am sure there are many of you who have experienced this problem.
I have an interesting problem.
At the main meter room the loop impedance reading is 1.1 ohms.
At the second metering room fed via the main meter the loop impedance reading is more than 20 ohms.
So there are a few ways to determine what exactly is the problem, unlike what we would normally do if it was a council fed meter, just send a complaint to the council indicating there is a high reading and sign off the COC.
Unfortunately the problem is in a complex and must be sorted out. The amazing part is that 3 COC have been issued in this complex recently and none have indicated this problem. I have been called in to give a second opinion.
The first problem I noticed, a lead cable from feeding the main meter room from the council. This is generally where your problems begin. The cable between the meter rooms is an ECC cable. The tinned copper wires are used as an earth
It could also be joint somewhere between the 2 meter rooms.
I did check the earth terminations and found them all loose. I will suggest they are removed one by one, cleaned and reconnected, however i dont believe this would solve the problem.
Time to sit down and get head around this issue.