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  1. I do not normally go to counter days just because...

    I do not normally go to counter days just because I am not all that interested in the latest and greatest tools, but I went to one not real long ago. This guy was there.

    He is the mascot for the...
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    UL508 is not the same thing as UL508a. UL508...

    UL508 is not the same thing as UL508a.

    UL508 is for industrial control equipment. PLCs are listed to this standard, for example.
    ...
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    just how far downstream can it be?

    just how far downstream can it be?
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    11$$
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    Nonfused switches do not have an AIC rating. That...

    Nonfused switches do not have an AIC rating. That only applies to OCPD. They would have a SCCR though. I don't know of any that are that high.
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    What is your specific objection?

    What is your specific objection?
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    11$$
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    You need 65k, but 100k is OK as well.

    You need 65k, but 100k is OK as well.
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    27$$
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    UL508a has been around since at least the mid to...

    UL508a has been around since at least the mid to late 80s.

    before that the most common control panel spec in the US was JIC. The color code on it is the same as UL508a. It had been around since...
  8. there is no benefit to a continuous load on such...

    there is no benefit to a continuous load on such a xfmr.
  9. I would suggest getting a copy of the appropriate...

    I would suggest getting a copy of the appropriate equipment standards for the equipment you want to supply for the countries you want to supply them in and see what the requirements actually are. It...
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    27$$
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    one of the benefits of getting the panel UL508a...

    one of the benefits of getting the panel UL508a listed is that it will come with a SCCR. It is one of the requirements for UL508a listing. There is no way to tell without a close look but the first...
  11. If this is going overseas I don't think you can...

    If this is going overseas I don't think you can apply US requirements. A lot depends on what you are actually doing but if the CB is also the main CB for your panel, I think it is a requirement in...
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    if you try to download it to a different...

    if you try to download it to a different processor the software will tell you and ask if you want to change the processor type. if it can be done, the conversion is painless, but if not it won't...
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    Other than 250.104(B), what code would require...

    Other than 250.104(B), what code would require this.
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    16$$
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    it is probably already bonded by the pressure...

    it is probably already bonded by the pressure switch power connection.
  15. as a practical matter you cannot effectively test...

    as a practical matter you cannot effectively test them.

    you can do as another poster suggested and plug it in a rack and measure the voltage on the back plane, but it may not mean all that much....
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    27$$
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    For the most part, except for some relatively...

    For the most part, except for some relatively minor issues, it is not all that hard to get a foreign built machine to meet US requirements. Just add the following words to your purchase order...
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    Possibly. it appears there is a 5/01 that has...

    Possibly.

    it appears there is a 5/01 that has 1k of memory and another that has 4k of memory, while the 5/02 has 4k. IIRC, both have just the one DH485 port.

    I seem to recall though that there...
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    I would not derate, however, keep in mind that...

    I would not derate, however, keep in mind that these type of relays are usually only suitable for pilot duty unless otherwise noted.
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    There is nothing that inherently prevents an old...

    There is nothing that inherently prevents an old machine from being as safe as a new one. Most machines beyond those that plug into a wall socket are not NRTL tested, listed, or anything else. The...
  20. every state has different rules that electrical...

    every state has different rules that electrical utilities in that state have to follow. another poster mentioned one that is common to most states. there are also some OSHA issues that you may have...
  21. If it is a listed piece of equipment, the...

    If it is a listed piece of equipment, the standard by which you build it will tell you what you are allowed to do. Generally speaking, I would expect that the listing standard would allow the steel...
  22. Added thoughts. It is hard to comment on your...

    Added thoughts.

    It is hard to comment on your question with any certainty as you have not provided anywhere near enough information about what your actual situation is to make an informed comment....
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    5$$
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    there might be some cases where this is true for...

    there might be some cases where this is true for other reasons, but not as a general NEC rule.
  24. The US electrical code requires the EGC be run...

    The US electrical code requires the EGC be run with the circuit conductors in almost all cases, so using something else like the structural steel would not be in compliance. It should not make all...
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    First off, if there is a safety hazard with a...

    First off, if there is a safety hazard with a piece of equipment, OSHA requires the employer deal with it regardless of how old the machine is if the business has employees that are exposed to the...
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