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main bonding

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  1. N

    What is the name of the fault when main bonding high resistance?

    Hi What do we call the type of fault when the main bonding conductor has high resistance higher than 0.05? Is it called non-continuous? Or high impedance? Many Thanks
  2. N

    Question regarding filling in the box for verification of Main bonding Conductor.

    Hi I am trying g to fill in the Electrical Installation Condition Report, section J. my question is regarding checking the boxes in the section Main protective Conductors. If I have a high value for main protective conductors say to incoming water. What happens to the box Connection /...
  3. polo1

    Non continuous main bonding

    EICR - Single main bond 10mm2 from MET to gas to water, but it's "broken" at the gas clamp. Code 3 for me, but you........? Regards.
  4. P

    0.05 Max Impedance for Main Bonding Conductor

    Got massively ribbed on another post for not knowing that max impedance for a main bonding conductor is 0.05 ohms, so I expect some more for this post!....... I'm going to assume there is a very simple answer for this, but despite me going blind reading GN8 I can't for the life of me work out...
  5. M

    Main Bonding Conductor and other stuff

    I'm following, to do some maintenance at a works, where acontact electrician who is completing the re-wiring of the office area. The following came to my attention and wonder if the regs change so fast that Icannot remember which was the latest edition or amendment or whether everyelectrician is...
  6. N

    Main Bonding of an old water pipe.

    Im working on an instalation where the main water comes in to the proprerty then goes into a concreate floor and comes up in another room to feed a toilet. 1) Would the pipe coming up in the toilet need bonding? 2) Also there is talk of cutting off the current water supply to the toilet and...
  7. A

    Main bonding conductors connected to trunking.

    Today i have been asked to give an independant opionion on electrical work undertaken by another electrician on a commercial property. There has been work done to "improve the mains bonding arrangments". The buildings supply is a 100a 3 Phase TN-C-S. Connection to this is by a 50mm2 single...
  8. R

    main bonding with plastic pipes

    I have got a refurb to rewire, the incoming water supply is in plastic pipe as is all pipework in the premises run in walls and underfloor.Copper is only used to connect to radiators and taps where they exit the wall or come up from floor boards. I can therefore omit the main bonding as long as...
  9. S

    No main bonding EICR code??

    Hi guys, i did a EICR on a property which i found to have no gas bonding or water bonding? I listed this as a C2 but is this over the top considering it has been fine for 25+ years and there are plenty of properties around which are still in this condition? Also backboxes were no existing and...
  10. kingeri

    Main bonding to next door's water pipe

    Did a CU change today, and replaced main bonding to gas and water. The property is a back-to-back terraced house, and I noticed that the water supply for the house behind goes through this property's cellar. There are two water pipes coming in right next to each other. Both were bonded, along...
  11. D

    Main bonding of plastic/copper services

    Morning all... I am working on a property which has just had a lead water mains replaced with plastic. This comes from the main stop tap outside, then passes through the cellar for 8 meters, this then converts into copper which feeds the house. I am unsure as to whether this needs main...
  12. D

    Main Bonding issues. Help!

    I want to try and keep this short so i'll do my best! I was recently doing some work for an electrical and building firm who were fitting new kitchens to council flats. We were basically altering kitchen circuits and/or installing new ones if needed and issuing the relevant certificates. We were...
  13. C

    Main Bonding and Cross Bonding question?

    HiI need to know a few answers regarding cross bonding and main bonding, am hoping some of you can advise please:I have attached pictures with the questions on the pictures to save double typing: Would appreciate some input please. Thanks Chris
  14. B

    Junctions in main bonding?

    I was taught that the main bonding should be continuous, including from the water to gas for example. However I am struggling to find a reg that states that. Can anyone point me in the right direction? I ask because I have an installation where the gas isn't bonded, despite being only 2 feet...
  15. W

    Main Bonding issue.

    Hi all. I 'm getting 1.58ohms continuity on this main 10mm Earth bonding to water. The bond continues up to the flat upstairs and who ever did the work threw in 12" length of 4mm earth for good measure. Am I missing something or is this a case of new E Bond. Fitted a new clamp but did little to...
  16. W

    Main Bonding to another property.

    Hi. A brief history of myself: Self employed tradesman since 1982 ( Decorating, Joinery, Plumbing ). Done lots of minor works over the years. Did 2382 last year. Looking to register with NIC EIC. I'm doing a PIR on my son's ground floor flat with a view to fitting new CU. This is what I have...
  17. R

    what code for a under sized armouring as a main bonding conductor

    hi what code do you think should be atributed to a 2 core SWA cable used as part of a Main bonding conductor the steel Csa equivelent required is 64mm sq and the current 2 core 25mm sq swa is a BS 6346 with a steel csa of 60mm sq the above info on the required CSA is from the ESC technial...
  18. P

    consumer unit change with undersized main bonding.

    i have been asked to replace a consumer unit and have seen that the main bonding to water and gas are only wired in 6mm. does this have to be upgraded to 10mm so that it meets current regs as its a tncs system. thanks.
  19. A

    main bonding

    Is it ok to clamp 10mm earth cable to the gas pipe then to the water pipe and then to the Installation earthing terminal or do the have to be sepatete cables, the cable runs are about 3m. Many thanks in advance Mark
  20. R

    main bonding

    hey dudes just a quick one. Whats the craic with MEB when the main service changes to plastic entering the property then back to metal at the boiler?

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