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Type: Posts; User: petersonra

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  1. In both cases you would end up with OCPD on both...

    In both cases you would end up with OCPD on both sides of the xfmr.

    However, as I pointed out, he cannot use the primary OCPD to protect the secondary conductors in this case because it is not a...
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    I don't see how he gets there from what the code...

    I don't see how he gets there from what the code actually says.
  3. Granted that in a legalistic sense you end up...

    Granted that in a legalistic sense you end up having to do both, but most times when you end up being required to have OCPD on the secondary, it is a moot point in a practical matter whether the...
  4. with a 120/240 xfmr you have to have secondary...

    with a 120/240 xfmr you have to have secondary conductor protection, so it is kind of a moot point.
  5. IMO, it just is an SDS. it does not become an SDS...

    IMO, it just is an SDS. it does not become an SDS after the first disconnect.

    I don't believe you are required to bond in both places. In fact, I think it is discouraged.
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    if it ever comes up, I will just use min #6 or...

    if it ever comes up, I will just use min #6 or larger. easier than arguing with people about it and the cost is not normally all that much different.
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    where does it say that in the code?

    where does it say that in the code?
  8. why do you need the diode in the first place? It...

    why do you need the diode in the first place? It will reduce the amount of heat produced by 50%.

    other than the oddity of the application I don't see anything wrong with what you propose.
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    are you talking about the breaker interlocks...

    are you talking about the breaker interlocks often used as a substitute for a transfer switch?

    if so, I have heard nothing but good things about them.
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    you may "think" it is not allowed, but unless you...

    you may "think" it is not allowed, but unless you can find some provision in the NEC that prohibits it, it is not prohibited by the NEC. There may be some other code that applies that would prohibit...
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    regardless of what the tables say as far as EGC...

    regardless of what the tables say as far as EGC sizes go, you are still required to provide an effective ground fault path. In rare cases that may result in you needing to have a larger than expected...
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    if it is metal conduit no wire type egc is...

    if it is metal conduit no wire type egc is required at all.
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    There may be good reasons not to do this, but I...

    There may be good reasons not to do this, but I don't think you are going to find that there is any code that prohibits it.
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    IMO it is neither a raceway or a cable tray. And...

    IMO it is neither a raceway or a cable tray. And that is the only places where these kind of foreign systems are prohibited.



    The concrete hole in the ground is not an enclosed channel of any...
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    I would say no. I don't see a diesel line...

    I would say no.



    I don't see a diesel line in a raceway or cable tray that also contains electrical conductors in this picture.
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    Good instrument techs are few and far between. If...

    Good instrument techs are few and far between. If that interests you and you can get good at it you will probably have it easier than your average electrician.
  17. I was half serious. we get RFQs like that all the...

    I was half serious. we get RFQs like that all the time where it appears that the requester is just fishing for a price and has no intention of ever buying anything.
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    I think it is an explicit indication of ONE way...

    I think it is an explicit indication of ONE way to mount it.
  19. call an electrical contractor and ask for an...

    call an electrical contractor and ask for an estimate.
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    construction work is tough on the body and that...

    construction work is tough on the body and that is what a lot of electricians do. as an apprentice, you will be expected to do whatever is needed, and that generally involves the more unpleasant...
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    Off hand, I can't think of any reason not to do...

    Off hand, I can't think of any reason not to do so or any code that would prohibit the installation you are showing.
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    I did not say that. You still have to follow the...

    I did not say that. You still have to follow the manufacturer's instructions. I doubt that includes allowing the SPD to dangle by its lead wires.
  23. The dampness probably does not extend real far up...

    The dampness probably does not extend real far up the cable. Cut off the damp part.
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    You won't find something that is not there.

    You won't find something that is not there.
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    The point is that if you are careful with what...

    The point is that if you are careful with what you put inside it you won't need to pressurize it nor will it need to be in an XP cabinet.

    I have never seen either a fan or an A/C on an XP cabinet....
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