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  1. Replies
    4$$
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    248

    MCPs are magnetic only devices of course with no...

    MCPs are magnetic only devices of course with no thermal protection. They realy don't "protect" motors at all. If one does trip it is as a result of a failing motor. They do two things, as a motor...
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    6$$
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    Interesting that you omitted the kva rating of...

    Interesting that you omitted the kva rating
    of the transformer though.
    There is no issue with using a transformer to step up but depending upon the va rating you may not like the results as the HV...
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    7$$
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    367

    Ireread your post a number on the times and the...

    Ireread your post a number on the times and the secondary. Voltage rating of the transformed appears to be missing.
    From the numbers non the subsequent posts one is led to believe that it may be a...
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    23$$
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    532

    Yes, should the OP include all the necessary...

    Yes, should the OP include all the necessary information most question could be addressed in a reply or two.
    But, it's a lot more fun the guess and to make assumptions on what the OP is trying to...
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    23$$
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    Exactly. To my point of my previous post.

    Exactly. To my point of my previous post.
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    2$$
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    180

    All circuit breakers are current limiting to some...

    All circuit breakers are current limiting to some degree which is why when the proper testing is done series- combination protection can be achieved.
    But there are specific requirements for breakers...
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    23$$
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    532

    Have you considered Art 450 table 450.3(A)?...

    Have you considered Art 450 table 450.3(A)?
    Also, why did you omit the KVA rating of the transformer in your post?
  8. I agree with you that a loose connection are more...

    I agree with you that a loose connection are more apt to have caused the failure. However It should be given some consideration that the heating and cooling of the undersized wire may have resulted...
  9. Replies
    8$$
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    182

    It is actually is not 600vac to 250vdc but up to...

    It is actually is not 600vac to 250vdc but up to 600 vac for an AC voltage or up to 250vdc for a DC voltage.
    As the others have said you are covered.
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    1$$
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    They may be hard to liquidate because they are...

    They may be hard to liquidate because they are often specified for the application. If you do get lucky whoever buys them may sit on them for a while before they find a buyer. This should give you a...
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    12$$
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    538

    As I recall while working as a sales and engineer...

    As I recall while working as a sales and engineer for a transformer manufacture you could design said transformer as a boost but there ended up to be very little cost advantage as one would expect to...
  12. Would you agree that a neutral is a load,...

    Would you agree that a neutral is a load, current, carrying conductor where a grounding conductor is not nor intended to be. The simple idea that an EGC is capable of carryng load current is a...
  13. I believe that you will find that the device is...

    I believe that you will find that the device is UL 489 listed device. As such I must meet the testing requirements of a UL489 listed device.
  14. Replies
    12$$
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    538

    Yes, the problem is stepping up about 100v which...

    Yes, the problem is stepping up about 100v which is not practical to do with as boost transformer configuration. You may as well use a two winding isolation transformer.
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    6$$
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    369

    Thanks. Something that I was never aware of...

    Thanks. Something that I was never aware of especially by Ford himself.
  16. A 1200a frame with an 800a NIT unit or a...

    A 1200a frame with an 800a NIT unit or a nonadjustable trip unit? It is obvious that you can't change the rating of the other quipment. Is there an issue with feeding a 1200a rated piece of equipment...
  17. Wouldn't one consider a breaker that is...

    Wouldn't one consider a breaker that is classified as having a NIT or non interchangeable trip unit and not adjustable? As such it would require a qualified person to change the trip unit rating.
  18. I would have not problem with this product. Did...

    I would have not problem with this product. Did you not see the UL label prominetly displayed on it? NOT!!
  19. Replies
    1$$
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    245

    Use an aircore reactor.

    Use an aircore reactor.
  20. [QUOTE=Besoeker;1595501] It will be about...

    It will be about inrush when the OCPD is tripped as the transformer is energized. If so how is it addressed?
  21. [QUOTE=Besoeker;1595450]One other point that I...

    [QUOTE=Besoeker;1595450]One other point that I add, and forgive if it has already been covered.
    If the transformer is designed for 480V primary and 208V secondary on load (and most are in my...
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    17$$
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    Is it "over current protection" or "short circuit...

    Is it "over current protection" or "short circuit protection?"
    The primary device I think would be intended to take the transformers of line should either of the transformers fail. As such the only...
  23. I've been in the industry since 1982 and worked...

    I've been in the industry since 1982 and worked for a DTDT manufacturer for 3 years. There is no derasting required in any of my application notes.
    However you will note that the OP does not include...
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    15$$
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    Common faults are line to ground which is picked...

    Common faults are line to ground which is picked up by the 30ma gf element. The AFCI has been designed to detect undesirable in line arcing in a circuit as well as line to nuetral arcing all of which...
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    4$$
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    191

    Remember that the MCP is a reverse UR component...

    Remember that the MCP is a reverse UR component listed device with no "stand alone ratings." It must be used wthe a combination motor starter. MCPs start at 3a continuous, then 7a, 15, 30, 50, 70,...
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