Re: Tell us about your faults !
I`ve got a weird one that happened to me last year. It seems to defy reality.
I was working last year for a firm on a social housing project doing Periodics. It was an estate and all the properties were roughly the same. After doing the same thing day in day out for about 3 months, I tested a house which was a TN C S. The R1 + R2`s were all fine, the Ze was fine ( it was around 0.10) yet when I came to do the Zs they were all above 8 ohms (it was 16th edition board with MCB`s).
After being baffled and having a think, checked a few things out tightened all CPC`s in the board etc the readings stayed the same.
I spoke to the supervisor who was as baffled as me and he sent someone round for a second opinion ( I guess they thought I had got it wrong ) and the second opinion confirmed my readings. They decided to install a new CU to see if it was just something strange happening with the board itself.
Whilst that job was being done, a couple of days later I got the exact same problem in a property around the corner. WTF!
When the CU was changed on the first job, we got exactly the same readings again.Cue even more head scratching. I got offered a new job ( better pay ) and left that firm. On the day I was leaving they were talking about changing the two properties into TT systems to be able to get round the readings.
Anyone had/heard of anything like this before?