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Type: Posts; User: don_resqcapt19

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  1. Replies
    24$$
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    606

    But as the person in the substation under fault...

    But as the person in the substation under fault conditions, I really don't care what the voltage is to earth, I only care what the voltage is between the points I can touch.
  2. Replies
    24$$
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    606

    I don't see how a lower resistance to earth can...

    I don't see how a lower resistance to earth can reduce the step or touch potential. The lower the resistance to earth, the more current that will flow and the voltage drop on the grounding and...
  3. Replies
    24$$
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    606

    There are public inputs to make this change for...

    There are public inputs to make this change for the 2017 NEC....maybe CMP5 will listen this time!
  4. Replies
    24$$
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    606

    I don't see the GES, the connection to earth, as...

    I don't see the GES, the connection to earth, as reducing the step or touch potential. I see the equipotential grid as doing that. That is everything including the equipotential grid is at the same...
  5. Replies
    21$$
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    668

    I think that is just because we know that we can...

    I think that is just because we know that we can "abuse" the NEMA equipment and get away with it, and expect the IEC equipment to be the same, but it isn't.
  6. If I was inspecting and even if the equipment was...

    If I was inspecting and even if the equipment was listed as a service disconnect, but you had to open the equipment to operate the disconnect, the installation would get a red tag.

    That being...
  7. Replies
    22$$
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    493

    In my opinion the White Book information means...

    In my opinion the White Book information means that it is only suitable for the connection of communications bonding conductors.
  8. Replies
    24$$
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    606

    I don't think that the GES is near as important...

    I don't think that the GES is near as important as the equipotential grid in maintaining safe step and touch potentials in a substation under fault conditions. The grid makes sure everything rises...
  9. Replies
    22$$
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    493

    From the UL White Book for "Grounding and Bonding...

    From the UL White Book for "Grounding and Bonding Equipment, Communications" (KDSH).
  10. I have used the online White Book and the Code...

    I have used the online White Book and the Code Correlation data base from some time and this new page is a great improvement. The code section search is very handy at times.
  11. Replies
    19$$
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    551

    I have no idea what they should be called. ...

    I have no idea what they should be called. Extraneous bonding jumpers?
  12. Assuming that the switch leg is connected to a...

    Assuming that the switch leg is connected to a load and the load is still connected to its neutral, I would not expect this to be an issue caused by the use of a high impedance meter.
  13. Replies
    19$$
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    551

    I have no idea what those conductors are, but...

    I have no idea what those conductors are, but they are not EGCs.
  14. Many of the GFCI rules apply to cord and plug...

    Many of the GFCI rules apply to cord and plug connected equipment because it is more likely that the EGC connection to the equipment could be comprised than when the equipment is hard wired.
    ...
  15. Replies
    21$$
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    668

    I think UL 489 say the breaker must trip at 135%...

    I think UL 489 say the breaker must trip at 135% in 60 minutes or less.
  16. Replies
    15$$
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    614

    I don't have an older code book handy, but I...

    I don't have an older code book handy, but I think that the older codes required that the EGC be green, but stopped short of prohibiting the use of green for ungrounded conductors.
  17. Replies
    14$$
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    378

    There is nothing in the NEC, but there are...

    There is nothing in the NEC, but there are enforceable voltage drop rules in the energy codes that have been adopted in some areas. A 12 amp load on #14 at 50' is approaching a 3% drop, but I am not...
  18. Replies
    6$$
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    202

    Once you have picked the fuse size, you just use...

    Once you have picked the fuse size, you just use the disconnect that the fuse will fit in. If you are using a 20 amp fuse, you would use a 30 amp disconnect. The common disconnect sizes are 30, 60,...
  19. I really don't understand why this and some...

    I really don't understand why this and some similar rules are even in the code. The code does not apply to the manufacturer and I fail to see how a cord and plug connected portable device is...
  20. We have to be careful here...what the code calls...

    We have to be careful here...what the code calls a "common neutral" is not really how most use that term in the field. A neutral for a multiwire branch circuit is not a "common neutral" as far as...
  21. Replies
    6$$
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    366

    Chlorine + water vapor = hydrochloric acid.

    Chlorine + water vapor = hydrochloric acid.
  22. Replies
    26$$
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    882

    Maybe the cord wasn't but the plug on the cord...

    Maybe the cord wasn't but the plug on the cord was. That black stuff on the receptacle is part of the plug...it melted.
    In my opinion, this is a plug receptacle connection problem and not a wire...
  23. I think garage door openers are one of those...

    I think garage door openers are one of those items where the marked horsepower is not a real number .... just a marketing number. I would use the nameplate current per Exception #3 to 430.6(A)(1)...
  24. Replies
    22$$
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    839

    That happens with the enforcement of every...

    That happens with the enforcement of every subjective rule in the code book. How can any subjective rule be enforced without "making up a rule"?
  25. Replies
    2$$
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    244

    Many of us believe that Cat 5e cables are covered...

    Many of us believe that Cat 5e cables are covered by Article 725 and not 800, but it doesn't make any difference as 725.24 says the same thing as 800.24.
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