supplementary

supplementary

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  1. K

    Supplementary bonding clarification needed

    Hi I need help with understand supplementary bonding. I know RCD is additional protection and in the even of the fault at leakage of 30mA, it interrupts the circuit and prevents a person to get electric shop by keeping the voltage below 50v. However I also came across this idea if RCD isnt...
  2. F

    UK Scenario where lack of supplementary bonding is dangerous

    So I know why it is done, where it is done and how it’s done, but I’m yet to see a scenario where there is shock danger in a typical bathroom in a dwelling provided a) the main bonding is in place and b) the CPC’s of all circuits are connected together in the CU (as they will be). Consensus is...
  3. ETradesmen

    RCBO’s and Supplementary bonding

    Just a thought guys in terms of RCBO’s and supplementary bonding. Obviously supplementary bonding isn’t required as long as a 17th / 18th condition consumer unit is fitted (dual RCD protecting all circuits) but what if it’s a main switch only with individual RCBO’s? What is stopping somebody...
  4. S

    How do I tell if my bathroom has supplementary bonding?

    Hello. Non-electrician here. Failed an EICR yesterday as the electrician graded my consumer unit C2. Why C2 and not C3? He didn't say (and still won't). Consumer unit is the same age as the building - dates from 2003. No RCD. But never had any issues. No apparent defects. Apparently lack of...
  5. O

    question regarding supplementary bonding.

    Curious about supplementary bonding, I have these two 4mm Cables loose and not connected to anything in my parents house. I presume they are for the hot and cold copper pipes, my questions is do i need to join/make a connection between the hot and cold pipes? I work as an electrical improver...
  6. 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...
  7. Dartlec

    EICR Coding Confusion wrt Supplementary Bonding

    Yes, it's another EICR coding question - hurrah! :blush: Inspecting a small 1 bed 70s ex-council flat that was going well. Main Bonding had been put in place in advance and most of the tests were as perfect as you could get. Seriously, if you wanted to set up a 'perfect' test rig I don't...
  8. Pretty Mouth

    Supplementary bonding requirements

    Evening All. I've been having a debate (argument) on a FB group with another well respected spark, and my old tutor. The subject of discussion - supplementary bonding. Their opinion is that it is required throughout an installation, where ever the conditions in 415.2.2 cannot be met without...
  9. J

    Supplementary bonding

    Would this barrier require supplementary bonding to the cable tray?
  10. J

    Industrial and supplementary bonding

    Hi guys I’m still working towards my NVQ level 3 in electrical maintenance within an industrial environment pumps and process equipment. I know this question may be a bit vague but I’m confused about supplementary bonding in my working environment. Here are a few of the things I’m confused...
  11. J

    Supp bonding needed with RCD + testing supp bonding

    Hello there all, I'm a fairly newly qualified electrician and have been doing more and more EICRs lately, if someone could actually trawl through my long question and answer it then I shall be eternally grateful I have tested 3 electrical installations in the last week with no RCD devices, all...
  12. T

    Bonding question

    Alright folks, Looking for a bit of advice with supplementary bonding - pictures attached for context. Bit of background - I'm in the process of repairing some metal bollards: I decided the best option was to rip out the old guts which comprised of some old fluorescents complete with all the...
  13. driverman

    Additional supplementary bonding

    Ok new house. New install cert issued. However, no supplementary bonding that I can see and accessible . There is a 10mm earth wire connected above the water stop cock point of entry under the kitchen sink. However, no cross bonding to the hot pipe. According to install cert the cross bonding...
  14. newfutile

    supplementary bonding

    we are allowed to omit supplementary bonding on the 3 conditions (rcd, disconnection times and main bonding adequate ) if we have a plastic insert we may omit main bonding on water for example. would supplementary bonding have to be added as it no longer has main bonding ?
  15. H

    Supplementary bonding

    Here is a question that I would love tp know your opinion on and honest answers if you do this or not. Where there is full RCD protection in a domestic property or at least all circuit in the bathroom have RCD protection, how many of you carry out resistance testing on the exposed pipe work to...
  16. Midwest

    Existing Supplementary Bonding

    I'm doing a bathroom refurb this week. Today I inspected the existing install. The bathroom only has lighting circuit in it (6A mcb, no RCD protection). The hot & cold services have supplementary bonding, as does the CH towel radiator. The non electric shower hot & cold service does not have...
  17. sevuk

    Supplementary bonding

    I've seen a sink recently which has copper pipe goes out of the toilet to a connection under the floor which is supplied in a non conductive material back to the main shut off valve. The same method is used from the toilet. To me this doesn't require bonding if there is rcd protection, but it...
  18. L

    Supplementary bonding

    Hello all, Perhaps a few of you could help my understanding of the following query. The situation I am about to describe is purely hypothetical to help my understanding of the issue. Let's assume within a domestic bathroom, I have a combination of exposed conductive parts and suspect...
  19. Leader

    Supplementary bonding question

    hi all, I know there are many questions on this topic but I'm unable to find my answer. Can I connect my 4mm supplementary bonding cable to the cpc in my shaver socket which then links directly back to the light (and via the cpc back to the CU)? Sorry if it's a basic question, I am still training
  20. S

    Hi introduction

    Hi I used to be a qualified trading electrician, now in IT but still keep my hand in for friends and family and have just passed 17th regs, but don't know all the answers! Thanks Steve

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