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Fair enough i need to loose the word main

OK i will put it differently. Can you use the same unbroken conductor for an main earthing conductor and main equipotential bonding on a TT installation, without contravening and regulations?

I have seen many a post asking if it is acceptable to use a single MEB conductor for all services providing it is unbroken. My question is: Is there a regulation that prohibits the use of a single conductor for earthing and bonding of a TT installation providing it is unbroken?

http://www.euroheat.co.uk/images/product_images/1928100668TB56%20HiLo%20Electrical%20Control.pdf This might be of some use to you Bingo

I presume that you mean running your cable through an airbrick. Apart from the fact that it looks as rough as, i do not believe that one cable would prevent the free flow of air to pass through. It could possibly be argued that you are using something for a purpose that it was not designed for...

Your reciever requires a permanent live neutral and earth and terminals 1 is the live from your boiler and terminal 3 is the live return to the boiler if you are connecting it to a combi for 230v. If you are bringing your supply from a wiring centre for a y/s plan etc terminals 1 is your common...

Thank`s for the response. I have had her out this morning and she is her usual chirpy self, running around like a loony. She has done her business and it is firming up. No signs of blood just a faint red tinge in one part of it

Hi Apache, looking for advice if you would be so kind. I got in from work not too long ago and there were the dried remains of bile in four areas on the floor. I let my dog out and she had a very smelly, loose/watery poo, but there was a little bit of blood in it. I then walked the dog and she...

Hi Das, have you always had this issue or has it just recently started happening?

I have but it directs you back to 537.1.4

Hi all i was on a job today, domestic dwelling. TN-C-S supply. Inside the meter box before the consumer unit i noticed a double pole isolator, however only the line conductor was passing through the isolator. The isolator was all sealed. Surely this does not comply with 537.1.4

Just do the job and notify after you pass. Contact your proposed scheme provider and explain the situation to them

So theoretically the corrected value is your max value if you cannot exceed this

So what do you do when you exceed the 80% value but you do not exceed the maximum Zs permitted by BS7671?

I think that they knew he was there for a very long time. They were just playing mind games with Pakistan to see if they would disclose that he was there.

I think the others like to see them in with their corresponding cpc`s only and not all bunched together and the ends crimped with a ferrule

Looks like the old M.E.B`s in 10 and 11 to me. You will need to crimp a ferrule on the end of your RCBO earth fly leads and terminate them individually with their corresponding cpc`s

I recently connected a boiler and noticed a nice new 17th edition C/U. Great i thought, no M.E.B`s to install. Looked inside the C/U and there was only a 6mm

Thank`s for the replies guys. From first impressions i would say that it used to be a TT. You can see the cables coming in overhead. Looks to have been jointed a few times aswell

Hi all, investigating a high Zs, so I measured Ze on a PME system and got a reading of 0.53Ω I contacted the DNO who informed me that they would accept a value of up to 0.8Ω, I repeated that it was a PME and they said that it did not matter. Anyone had a similar conversation with them?