Help! Never seen this before!

[Steve93]

I am installing solar to a house and this is there main incoming. I can’t see an Earth anywhere but test ZS across L-N coming out at 0.20. Then with gas bond disconnected is 0.38! But we only have gas bonding. No other earth anywhere. Anyone had this?

 

[Pete999]

A pic of the gubbins in the CU might help!

 

[Deleted account]

What about a pic of the main earth terminal in the cu.

Still waiting for that pic....

 

[telectrix]

A pic of the gubbins in the CU might help!

wayayy too technical as it's way past beer o'clock.

 

[Pete999]

Still waiting for that pic....

Yeah whats's apnin OP get a grip will you

 

[Steve93]

I’ve explained. There are final circuits and one 6mm which goes to the gas bond only! Nothing else no main earth nothing. Just the earths from the circuits

 

[Deleted account]

Is the consumer unit metal. Is that bonded to earth via the casing. Need photos.

 

[DPG]

Not sure if anyone has thought of it, but we could do with photos.

 

[Pete999]

Not sure if anyone has thought of it, but we could do with photos.

Keep up Mate please

 

[Steve93]

It’s an old domino db. Plastic. I’m off site now and couldn’t keep turning power off to take pics inside.

 

[davesparks]

DNO don’t seem to care! They bassicly told me to put it on a TT system. They can send someone out to see if it can be changed to PME but that’s a 5 week waiting time.

Did you explain to them that there’s an unearthed cast iron cutout with open holes in the top exposing live parts?
The TT/PME answer sounds more like the standard response to asking for an earth connection rather than reporting this situation.

 

[Octopus]

Maybe seek the advice of your boss - I see you have trainee access.

 

[buzzlightyear]

the op needs to get DNO in to have a look at it ,if he is in doubt.
test at the cu and test for a earth on old DNO isolators . what's the betting their is a earth some where .ring up Scottish and south Elecs.

 

[b-spark]

I've seen it before, inside the cast iron isolators theirs a rewireable fuse, what your seeing is a split supply for another building aswell as yours. Back in the 50's it was also acceptable to use the gas as the earth. The meter fitter wants reporting, but it is upto the electrician to give a earth. is it a rural location?

 

[Steve93]

Did you explain to them that there’s an unearthed cast iron cutout with open holes in the top exposing live parts?
The TT/PME answer sounds more like the standard response to asking for an earth connection rather than reporting this situation.

Yes explained clear as day she just put me on hold and then went on to say they can send someone out in 5 weeks.

 

[Steve93]

Maybe seek the advice of your boss - I see you have trainee access.

Yes but something I’d rather find out for myself. He is well aware but I like to look into these things so I know for future reference etc.