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Metallic pipe with push fittings

Discuss Metallic pipe with push fittings at Electricians Forums; If a metallic pipe work has push fit type fittings that dont provide electrical continuity what should be done A=Leave it as it is B=Increase the pipe size C=Bridge with ...
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    Default Metallic pipe with push fittings

    If a metallic pipe work has push fit type fittings that dont provide electrical continuity what should be done

    A=Leave it as it is
    B=Increase the pipe size
    C=Bridge with a brown bonding conductor
    D=Bridge with a G/Y bonding conductor

    I was thinking A ?
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    Default Re: Metallic pipe with push fittings

    There is insufficient information given to provide an answer.

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    Default Re: Metallic pipe with push fittings

    I'd go with D

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    Default Re: Metallic pipe with push fittings

    Quote Originally Posted by wirepuller View Post
    There is insufficient information given to provide an answer.
    Thats word for word what the TMA question reads.

    I did wonder what material the push fittings where made from but as it says dont provide electrical continuity i guessed the fitting must be of plastic.
    I dont no maybe im talking rubbish.

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    Default Re: Metallic pipe with push fittings

    Quote Originally Posted by JUD View Post
    I'd go with D
    That was my second guess as if the matallic pipe did need bonding then at least its done by answer D.
    Last edited by Virtualcom13at; 23-06-2011 at 10:51 PM.

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    Default Re: Metallic pipe with push fittings

    I'd agree with Jud as well. The reason being is that any fault current finding the water pipes would not be carried away (and therefore not tripping the mcb/fuse/rcd) and not finding earth (MET) at the cu hence the need to bridge the plastic push fit. An experiment was carried out in a Chris Kitcher testing book. He had two short pieces of copper pipe with a push fit connecting them, filled the pipe with water and put 230V on one end and tested the other end. Results showed only 3mA (0.003A) was conducted through the water. Just so you know why we bridge plastic push fittings. Any more questions, I can answer these whilst Telectrix is on another thread
    Last edited by Paul.M; 23-06-2011 at 11:23 PM.
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    Default Re: Metallic pipe with push fittings

    have to agree with jud and paul m on what the answer would be, but wirepuller is correct as the question does not stipulate whether or not the pipework is extraneous. so the question as it stands is unanswerable.
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    Default Re: Metallic pipe with push fittings

    id kick a fuss in the shop and say i wanted metal ones

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    Default Re: Metallic pipe with push fittings

    Cheers guys
    Glad i found this forum

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    Default Re: Metallic pipe with push fittings

    Quote Originally Posted by i=p/u View Post
    id kick a fuss in the shop and say i wanted metal ones
    Thats plumbers going for the easy option. he he

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    Default Re: Metallic pipe with push fittings

    Quote Originally Posted by Virtualcom13at View Post
    Cheers guys
    Glad i found this forum
    you won't be after a few weeks
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    Default Re: Metallic pipe with push fittings

    Unless the pipe is being used AS the bonding conductor, why would you wish to assist the distribution of fault voltages onto sections of pipework which because of the high resistance of water are, in effect, isolated sections?Wirepuller is right, the question as it stands can't be answered but I'll bet Mr Kitcher isn't advocating linking across push joints on pipework that isn't being used as the actual bonding conductor.
    Paul.M likes this.

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    Default Re: Metallic pipe with push fittings

    I'm afraid Mr Kitcher does and has a nice photo in his book of him doing it. It's things like this that confuse people. I know there's a few mistakes in his books but these are what people use to pass tricky exams.
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    Default Re: Metallic pipe with push fittings

    Who is this mr Kitcher he sounds like a man who knows. whats his book called??? as im going to be studying this possibly for the next two years and then working and learning for the rest of my working life i might as well get more books to add to my collection.

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    Default Re: Metallic pipe with push fittings

    Quote Originally Posted by paul.m View Post
    I'm afraid Mr Kitcher does and has a nice photo in his book of him doing it. It's things like this that confuse people. I know there's a few mistakes in his books but these are what people use to pass tricky exams.
    I remember seeing the picture but again, I'm certain that this will be where the pipe IS the bonding conductor, check it out if you can Paul, I'll not be able to see the book until Monday.

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