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  1. Thread: Box Size

    by augie47
    Replies
    7$$
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    124

    If we size it... next time you need one sized you...

    If we size it... next time you need one sized you will come here :)
    Use the link jumper gave you in Post #2 and tell us what size you come up with and we can check your dimensions.
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    10$$
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    117

    Hummm wonder why I asked that question :D

    Hummm wonder why I asked that question :D
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    10$$
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    117

    Curious. How much of your load is 120 volt ?

    Curious. How much of your load is 120 volt ?
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    5$$
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    118

    Thanks Charlieb. I vaguely recalled it but could...

    Thanks Charlieb.
    I vaguely recalled it but could not locate it on my search.
    I moved my comment to there and will close this.
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    33$$
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    704

    I read what the Handbook states but that's an...

    I read what the Handbook states but that's an opinion. The actual wording of the NEC does not state "except for adjustments or derating".
    At one of the IAEI seminars I attended it was stated that...
  6. :thumbsup:

    :thumbsup:
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    50$$
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    1,269

    add to that a second scenario ..supposed a phase...

    add to that a second scenario ..supposed a phase in the building went to ground (on the ungrounded system) ,, coincidentally a different phase went to ground at the pad.
    Be a pretty decent shock...
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    5$$
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    118

    250.122(B) 2014

    I may never see 2014 adopted in this area but sometimes it's difficult to explain 250.122(B) to folks when they increase phase conductors foe any reason, the EGC must be proportionally addressed....
  9. I can't say you are satisfying him so much as you...

    I can't say you are satisfying him so much as you are the NEC.
    NEC 250.24 requires a grounding electrode at the transformer and a grounded conductor to each servicesupplied by a grounded AC supply....
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    1$$
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    103

    I am closing this thread, in accordance with the...

    I am closing this thread, in accordance with the Forum rules. This Forum is intended to assist professional electricians, inspectors, engineers, and other members of the electrical industry in the...
  11. Replies
    7$$
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    193

    Mike: I am more acquainted with the Section than...

    Mike: I am more acquainted with the Section than I want to be :)
    I guess it's in interpretation question. To me individual controllers supplied by a din rail fuse block do not meet the criteria of...
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    12$$
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    392

    My first thought was that you needed to look at...

    My first thought was that you needed to look at the heat resistance if you were going to operate them off 480, but if your are going to use a transformer to supply the machine at it's rated voltage...
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    10$$
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    285

    :D

    :D
  14. Jraef and Jim: Both posts are very interesting....

    Jraef and Jim: Both posts are very interesting.
    I had an inspection today on some new foundry equipment. Transformer SCA is 43k, gear is 65k. New UL listed industrial control panel, 100 amp load...
  15. Depends on how many strands you cut :D

    Depends on how many strands you cut :D
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    10$$
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    285

    Someone apparently convinced the Code Making...

    Someone apparently convinced the Code Making Panels that they are.:D
    I guess one can assume to the untrained they could pose some confusion in turning off power and definitely some to the...
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    7$$
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    193

    Motor Disconnects

    Please note that this question is related to equipment installed under the '08 Code as later Codes have some changes:
    I have a sandblast machine newly installed in an industrial facility. There are...
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    7$$
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    223

    Not to muddy the waters as I am ill equipped to...

    Not to muddy the waters as I am ill equipped to do more than mention the fact that 250.21(A) notes that circuit AC circuits for "industrial electric furnaces" if applicable.
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    3$$
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    114

    For communications circuits in general, 800.133

    For communications circuits in general, 800.133
  20. Unsure how strict your inspectors are or if it...

    Unsure how strict your inspectors are or if it will be inspected, but the State (along with OSHA) does require most equipment to have NRTL certification.
  21. agree. certainly surprising as it is rare to have...

    agree. certainly surprising as it is rare to have that high a operating amperage and only 5k SCA.
    maybe the infamous low bidder :)
  22. The Code requires a neutral to your 125 amp main...

    The Code requires a neutral to your 125 amp main disconnect at the meter 250.24(C) and your transfer switch may need one, but if there is no 120v load at the 125 amp panel at the end of your 180ft...
  23. Wow! Difficult to imagine that size equipment...

    Wow!
    Difficult to imagine that size equipment with a 5k withstand.
    I agree with you that with that size circuit it will be difficult to get your SCA down to 5k.
    My first thought would be to...
  24. Thread: Pull Box

    by augie47
    Replies
    8$$
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    267

    Sharing raceways and enclosures with more than...

    Sharing raceways and enclosures with more than one voltage or type cable involves 300.3 as well as Art 725, and Chapter 8 where applicable. There are few "one size fits all" rules and a shielded...
  25. Thread: Pull Box

    by augie47
    Replies
    8$$
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    267

    As far as mixing >600v with 600 volts or less,...

    As far as mixing >600v with 600 volts or less, 300.3(C) pretty much limits the procedure to some specific situations,
    770.133 seems to permit non-conductive fiber optic cables to occupy the same...
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