bonding

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  1. timhoward

    Main Bonding csa when earthing csa calculated

    Just double checking please - in situations where the main earthing conductor csa is calculated, and in a TNS installation, the 50% bonding conductor csa rule still applies to your final calculated and rounded up earthing conductor size? (As opposed to the tabulated size) I'm doing remedials and...
  2. B

    Code for bonding?

    Gas bonded with 10mm at front of flat, boiler at back of flat where a 6mm has been linked from it to an extraneous cold water pipe in bathroom. No other extraneous water pipes in flat. All continuity good but using the gas pipe as a conductor to link to water pipe. C3 for 6mm C3 for non...
  3. B

    Tray and basket bonding

    Hi all Regarding bonding of cable tray and basket. Is basket required to be bonded if only data cables installed on it ? plus bonding cable tray, best method i use it 6mm brass nuts and bolts with earthing straps. But brass nuts and bolts can be expensive, will roofing bolts and nuts be...
  4. S

    How how to bond existing in ground pool?

    Hello all, First post for me, a very frustrated DIYer whos leaving in a country (Czech Republic) where its near impossible to find an English speaking electrician who knows what they are talking about. My issue is that the company who installed our vinyl pool a few years back clearly didn't...
  5. A

    Confirming earth bonding continuity when cannot isolate supply

    Hi, just wondering how other sparks, go about confirming main earth bonding continuity when supply cannot be isolated, ze and pfc can be enquired wich is fine but what happens if you cant disconnect main bonding earth, is previous test results good enough to confirm?visual checks good enough...
  6. E

    Bonding and Mcbs

    If bonding raises all extraneous parts in a building under fault conditions to the fault voltage.How important is bonding if the mcb is already tripping the breaker in under 0.4 seconds if a healthy system.?
  7. A

    Bathroom bonding

    Hello I’m refitting my bathroom after in 2005 some builders did a fairly poor job of it. They even built a wall off the shower tray causing all the tiles to fail and the floor to rot. ? My question relates to bonding. There was bonding on the hot and cold supply that went up a pedestal basin...
  8. A

    Bonding and earthing theory

    Hi, I have a hypothetical just trying to understand earthing arrangements and bonding. For example if I am touching a water pipe and a socket back box with no fault occurring but a load on the socket. I am lead to belive the neutral will rise to 230v as will the earth as they are connected...
  9. cliffed

    The Main protective bonding conductors

    We have tables for the correct sizing of earth conductors & MPBC. We can also size cpc’s by calculation,can we actually calculate for MPBC.
  10. A

    Hi new member after advice! Help apreciated

    Hi everyone I'm new to the page, just needed some bonding and parallel earth path, small issue I cant understand if anyone could help? Thanks a lot Sam
  11. A

    Main bonding and parallel earth paths

    Hi all I was wondering if anyone could shed some light on an issue I cant seem to get my head around, say we had a metal socket earthed and a water pipe with main bonding, I touched the both of them in fault condition on socket (live touching metal box) now i understand the bonding puts the pipe...
  12. J

    Borrowed CPC for water bonding

    I've come across a house whereby the redundant immersion heater circuit (15A) has had it's CPC repurposed as a means of bonding the incoming water supply in the same cupboard. Irrespective of the CPC being undersized is this, in theory, allowed or must the earth bonding be clearly identifiable...
  13. newfutile

    Unusual gas meter bonding

    3 gas meters bonded via a rod , I have not been in these properties just thought I see what others think of this?
  14. Pretty Mouth

    Main bonding, supplementary bonding

    A technical question: Regulations require us to bond extraneous parts back to the MET with an appropriately sized bonding conductor. I don't dispute that, that's what the regs say so that's what I do. In situations such as outbuildings with extraneous parts, where the distributor's earth is...
  15. M

    VA 2015 code Question with bonding and grounding for service upgrade

    Hello, I am working in the state of VA and they use the 2015 State of VA code. I am upgrading to a 400 amp service the meter base supports two panels dual lugs in it. One panel will be a 200 breaker "MAIN" and other will be future use. I know how to wire most of it but really unsure how I would...
  16. newfutile

    Bonding of Water pipes (plastic incomes)

    Just wondered what opinion people have of bonding of short lengths of copper water pipes, this is in the communal area of flats . above the copper it goes back into plastic and appear to enter the building in a blue plastic pipe
  17. C

    Neutral ground bonding

    Hello, yank living in Chile. Electric is the same as UK...220v. I am installing a whole house ATS. The generator is a floating neutral. The manual states the neutral to ground bonding must be in the ATS. Being a yank I am used to working with 4 leads 2 hot 1 neutral 1 ground. Now I have...
  18. cliffed

    Main protective earth bonding conductors

    We are now told no bonding is required if the Water enters via plastic insert, same with the Gas.. So why are we bonding the Lighting protection conductor to the Main earth terminal bringing an extraneous conductive inside the building,when we are actually trying to prevent this happening.
  19. Z

    Plastering, bonding, painting.

    Hi folks, I have just started working with an electrician who is adamant that the chasing during a rewire is plastered and painted over by the electrician himself. I'm sure I have heard electricians instructing the client to get a plasterer and painter to finish up. How do you guys do it...
  20. Ben Keer

    Earthing and bonding

    Hi all. Following on from some research into the adiabatic equation, I realised that its ok using it to determine the main earthing size but I couldn't work out whether it gave me a size big enough to also support main bonding from it. The scenario being if I were wanting to run a submain from...
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