Recent content by FreeLec

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    Dangerous upgrade to crabtree rcbo's

    I realize this post is over a year old but I have some info that may clear this up. Don't know if anyone will see this now but I thought I'd post it anyway. I recently had the same issue getting a light shock off the neutral flylead. After looking up the specs of this RCBO I found the reason...
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    Lucien Nunes - Results of IR tests on equipment

    Thanks Lucian That didn't occur to me. I haven't seen an earth present indicator in a data rack before, but then I don't look at them that closely. I looked up PDUs for data racks but didn't find any with one so they must be rare. I did an IR test on a Fluke test plug with LEDs and a...
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    Super Magic Pyro

    Pete999 I am not using any glands/pots etc. This is just an experiment with some MI with regard to the way it absorbs moisture etc. It's just that I was surprised when the mag ox actually dried out after being put in direct contact with both steam and water. 2 other pieces of MI from different...
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    Super Magic Pyro

    I thought there was something done at some time to improve the prevention of moisture ingress but it was just a vague recollection in my mind about something I had heard years ago. You have confirmed that it was true. I didn't know how it was done so thanks for the information about the added...
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    Super Magic Pyro

    ??? What ???
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    Super Magic Pyro

    I recently came across Pyro that had been sitting cut off in a damp basement. The last time made off Pyro was 3 years ago. I have various cut offs and pots & glands with the intention of occasionally keeping in practice. I had read all sorts of things from them in the past and seen various...
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    Lucien Nunes - Results of IR tests on equipment

    Lucian I hope you will catch this thread. I have been doing some condition reports so have been coming across a lot more items of equipment. There have been 2 that have had readings like 0.35 Meg from L+N->E. They tend to be electronic equipment. I don't know exactly what they were as they...
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    Lucien Nunes - Results of IR tests on equipment

    Hi Lucian. I hope you see this post that I said I was going to put up in response to your information. After what you said about being surprised about such a low resistance with equipment and because I hadn't given this too much thought, I had only assumed that some equipment had very low IR I...
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    Is it acceptable to enter low IR on MWC

    ..... :28:
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    Is it acceptable to enter low IR on MWC

    Finally got it sorted out with the supervisor. I called NICEIC and told them about the situation. They said what I thought they were going to say but it confirmed what I already new and I could then have backup for my assertion. I have had many different versions of what can be done like, "you...
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    Is it acceptable to enter low IR on MWC

    When I did put LIM on the cert my boss said to still test and put the result even if it was 0.00 Meg. The only problem is that you can't put LIM somewhere where there is no genuine reason for limitation. I'm sure the IEE or NICEIC would not accept LIM because of time constraints on the job. A...
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    Is it acceptable to enter low IR on MWC

    I'm not sure you can just agree with the client what is acceptable in the cert. After all, it's not a condition report. It is supposed to be saying that everything that has been involved in the minor works is inspected, tested and safe. Therefore the circuit that the new works is involved in...
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    Is it acceptable to enter low IR on MWC

    Dillib I absolutely agree with what you are saying. That's why I am trying to sort out the issue with what sort of items cause problems with IR testing rather than end up going to everything and disconnecting etc. This takes up so much time causing comments like "why is it taking so long" and...
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    Is it acceptable to enter low IR on MWC

    Murdoch I can't see what you don't understand about this. The client is quoted for the job with the understanding that it will take a set amount of time to complete. The quote takes no account of any other remiedials that may need to be done. If the remedials take a short time they are done...
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    Is it acceptable to enter low IR on MWC

    That makes complete sense as to the way the surge protector works. Now that, without a doubt, is due to the component dealing with the surge. At 250V it would not conduct but at 500V it would. I have found that some surge protectors only have components between L and N so 500V will have no...

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