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Thanks everyone. I phoned my DNO (EON) today, I was passed around 4 different departments put on hold for 25 mins and eventually transferred back to the number I first phoned! No one there seems to know what the procedure is (for them to connect from the PME cutout to a CU or an MET) -...

Thanks Roo. As I said it is labled PME EARTH. Would the DNO be able to confirm over the phone that it is PME or would it have to be a site visit?

Interesting to hear Securesparks comments - as I'm based in Staffordshire! So, just to be clear: My DNO SHOULD provide an accessible Earth Terminal for me to connect to or they SHOULD come along and connect the new CU to the PME connection? Just want to get my facts right before I contact...

Yes, thanks, mine is like the photo and it's labled PME EARTH but there's no 16mm earth cable leaving the box. As I said in my original post the DNO say it's the electricians responsibility to connect the earth cable but he can't remove the fuse!! So how are you supposed to do it? Surely...

Thanks Softus and Pensdown. Sorry for the confusion, when the existing fusebox was installed it was earthed with an earth rod; since then (about 10 yrs ago according to the neighbours) the supply was upgraded and PME was made available. I just thought that if I ever get round to installing a...

Hi Folks I've just moved house and would like to fit a new CU at some point in the future once I'm qualified. At the moment we have an old MEM fuse box on a TT system. There's a PME connection available but not a Main Earth Terminal that I could connect to. i.e the main fuse would need to...

Thanks for the replies everyone. :D

Thanks a lot for the quick reply Lectrician. As I said, I'm new to this so I just wanted to be sure. Cheers

Hi folks I was doing and Insulation Resistance check on a ring circuit at home today and got the following result: P-N >299MOhm N-E > 299MOhm All was fine until I tested between Phase and Earth. The initial reading was 185MOhm this then increased up to about 275MOhms...

Brilliant - thanks again everyone.

Thanks alot. I think I understand what you mean but just out of curiosity, in an "ideal" situation if there were NO parallel earth paths and the ZE was 50 ohms and R1 + R2 was 0.6ohms then WOULD the ZS measure 50.6?? Thanks again

Thanks for the quick replies guys - but I'm still confused!! I know that you're not supposed to disconnect the MEB's but I thought doing so would eliminate all parallel paths. What other parallel paths can there be other than main Water and Gas supplies?? What sort of reading should I...

Hi Folks I'm part way through my studies and we've just been learning about ELI. I thought I was begining to understand it until I did a test on my own installation today. The problem is, is that my ZE reading is HIGHER than ZS. If I'm right ZS=ZE + (R1 + R2). I'm on a TT system and got...