bonding


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  1. S

    Industrial gas supply bonding.

    I've got to earth a new 50mm steel gas pipe. The pipe fitter didn't fit an earth stud to it and now he's gone. Am I just looking at a large earth strap or something else? Any ideas are welcome?
  2. C

    Parallel generator, earthing and bonding

    Hello, can anyone advise on bonding of extraneous conductive parts when supply is from a generator run parallel with distribution network? There'll b a 200kva generator supplying spray booths that have a gas supply to them. The metal pipes aren't underground but connect to tanks outside sitting...
  3. M

    Domestic Gas Bonding to MET or consumer unit

    sorry if this has been covered but I cannot find answers - 1st floor flat TNS supply from basement - the water is bonded at the stop cock within the flat to the consumer unit . The Gas enters in 2 places for cooker and boiler . Some "brightspark" has earthed this via a rod at the meter - does...
  4. D

    Domestic Gas meter earth bonding

    When running the 10mm Main Protective bonding to the Gas in a semi recessed gas meter box, how do you enter the box with the cable? The reason I am asking is: 1) The pipe sleeve for the gas pipe can not contain the earth as it is not 25mm separation. (yes I know it will attach to the pipe...
  5. Marcus Vaughan

    BS951 Bonding Clamp on the Incoming Supply

    Hi all, Just been to look at a job for a consumer unit changeout, checked the supply and, Not sure you can see it too well but TNS system with older earthing conductor in green kind of sweated onto intake (connection does not feel too good), but disconnected at the other end (goes into that...
  6. Gladius

    Faraday cage earthing.

    Hi there, We will need to earth a Faraday cage room in an experimental work, do we need to certify the job? Can it be only earthed into the plumbing pipes if available (Bonding?)? If there are no pipes around should we earth it into a mains circuit using a junction box or surface box for...
  7. edexlab

    Bonding Control panel

    Currently building a system for a PITA customer Did stage 1 last year ( I only did onsite install) They snagged and changed totally nonsensical things at a whim and my company let them Resulted in job being completed 4 mths late This year stage 2 only had 4 electrical snags versus 176 last...
  8. happyhippydad

    Understanding the new regulation regarding Main Bonding.

    Regulation 411.3.1.2 states .... Main bonding conductors shall connect to the main earthing terminal extraneous conductive parts. It then goes on to say... 'Metallic pipes entering the building having an insulating section at their point of entry need not be connected to the protective...
  9. AlmondSauce

    Bonding outside copper pipe

    We have a copper pipe running along a wall outside in the garden - it's used to supply a sprinkler system. (Inside the house it's plastic, there's a join to copper just before it comes outside.) Should it be bonded? It's not at present. All my knowledge of bonding comes from pipework running...
  10. S

    Main Protective Bonding Conductor question

    Hi guys Would appreciate your comments on the following.. I am currently involved in the refurbishment of a building with 2 service heads (both in use) but only one gas intake and one water intake. What are the main bonding requirements in this situation? I am assuming both MET's require a...
  11. J

    Street furniture bonding

    What are peoples thoughts on bonding powered Street furniture that is within touching distance of each other. I have a few ideas but there is nothing in the regs for guidance. Thanks
  12. J

    Domestic IEE 18th, 701.415.2 p241 - sup bonding bathroom

    Hi Old time 15th Ed. working way through 18th in prep for 18th test, also been a while since i wired in anger so to speak :-). 701.415.2 states that i can omit supplementary bonding in my bathroom so long as i have a protective equipotential bond compliant to 411.3.1.2 and finals in the...
  13. C

    Main Earth Bonding (two supplies)

    Large house with x2 power supplies/ service heads. first supply 3 phase TN-S located in a pig of a place and is furthest away from the gas and water entry points and meter positions. Second supply is a single phase TN-S located only a few meters away from the water and gas entry points to the...
  14. edexlab

    Bonding tray in 18th edition

    I've not yet got a copy or read the 18th ed But I heard the other day from a young Engineer at work who's doing the course ( his first time doing regs exam) that in the 18th it's compulsory to bond all joins in tray etc Can anyone elaborate on this?
  15. Y

    Bonding earth to metal furring behind plasterboard.

    Should I bond all metal furring behind plasterboard to earth busbar
  16. happyhippydad

    Does this require Main Bonding?

    The water pipes enter the house in metal, then there are a few cm's of copper after the stop cock and then plastic. It is hidden behind the kitchen draws (which can be removed to access). Does this require Main Bonding? The stop cock tests as 0.36Ω to earth, it is TNCS. I just cant see how...
  17. Thomas Connolly

    RCD Testing and Bonding question.

    Good Evening Everyone, I've gotten myself some work along an experienced electrician which I am massively grateful for. Prior to this, I need to test an installation. I am confident on the use of my tester and how to carry out the tests from what I have learned when I got my C&G2392 but I...
  18. J

    Domestic Bonding Extraneous Conductive Parts

    hi. Question re bonding a metal where cold comes in as metal pipe ground into house. So cold will be bonded where service comes in. Read article in wiring matters 2019 about changes for part 18. Example given of faulty kettle where fault to earth exists at kettle, some one touches kettle...
  19. M

    18th Edition Bonding requirements

    Was talking about this with a couple of guys on site earlier and differing opinions were had. It seems the line quoted below has introduced some confusion. "Metallic pipes entering the building having an insulating section at their point of entry need not be connected to the protective...
  20. BeardyJaws

    EP Bonding Copper pvc copper

    Hi, a little clarity required please. I’ve recently been to a property to make an emergency repair to a broken cable ( they drilled through it). I’ve patched the cable for the moment but while I was looking at the bonding I found the CH pipes bonded next to the incomer but not the incomer...
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