- Reaction score
- 5,382
place i was at a bit back....Absolute, how many times have you had an Ra reading of 150 or more and then carried out the same test on the incoming water main and found a reading of 20 etc, Im not saying you can use a water main as a stable earth you cant(plastic pipes etc) but if its sound and reliable then bobs your teapot.
recent panel...new colours so since 2005...but whoever had done it decided to use the lead water incoming as the means of earthing...
Ze=0.37
it wasn`t a case of leave as is indefinately....i explained to the client that the earthing arrangements needed upgrading...and arranged a PME connection for them at their request...
at least at 0.37 i was happy to leave as is until the DNO had been out....