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Type: Posts; User: LarryFine

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  1. Replies
    10$$
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    1,279

    Remember both the bus and output connections need...

    Remember both the bus and output connections need to be low-resistance.
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    13$$
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    289

    And that's why we use the 1.73 number.

    And that's why we use the 1.73 number.
  3. Thread: LED lighting

    by LarryFine
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    1$$
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    55

    Waterproofing, depending on the environment.

    Waterproofing, depending on the environment.
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    37$$
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    Whew! Thought it was me. :roll:

    Whew! Thought it was me. :roll:
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    37$$
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    :?

    :?
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    40$$
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    I use standard Wiremold boxes for switches and...

    I use standard Wiremold boxes for switches and receptacles under cabinets.

    Not my work, but similar (I don't use oversize plates):

    23182
  7. If it''s the number he has to work with for...

    If it''s the number he has to work with for 230/240v, the corresponding number at 200/208v would be use in whatever calculations he's doing.
  8. So my 51.97a guess was right on the money. 47 +...

    So my 51.97a guess was right on the money. 47 + 4.7 = 51.7.
  9. 47a according to the thread title.

    47a according to the thread title.
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    18$$
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    533

    I believe a 480v breaker's trip coil will operate...

    I believe a 480v breaker's trip coil will operate on 120 to 480 volts, expecting the trip current to be momentary.
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    37$$
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    Correctamundo.

    Correctamundo.
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    13$$
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    289

    Don't forget to calculate how much power (va)...

    Don't forget to calculate how much power (va) you'll be able to deliver per dollar each way, too.

    1ph wiring, where 3ph is practicable, is starting to look more expensive; and redundant.
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    214$$
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    3,938

    Not as far as I can tell; as you pointed out, it...

    Not as far as I can tell; as you pointed out, it says "single pole", and I don't know.
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    13$$
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    289

    I do that sometimes. ;) Depends on the...

    I do that sometimes. ;)


    Depends on the J-box, but I usually opt for 1ph runs vs 3ph runs. I wouldn't want to have to make any extra connections.

    But the, you're using line-to-line...
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    214$$
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    3,938

    Any single-phase outlet an any of the above. It's...

    Any single-phase outlet an any of the above. It's the outlet that triggers the requirement.
  16. Dave, that doesn't answer the question, which is:...

    Dave, that doesn't answer the question, which is: presuming why he's asking, for circuit calculations, the max current, corresponding to the 47a at 230v rating.
  17. Replies
    13$$
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    289

    So, you'd be using a delta configuration. A...

    So, you'd be using a delta configuration. A little unorthodox, but not unheard of. Will require 2-pole breakers likely require multi-pole switching, too.


    Lay out a sample run of each method,...
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    214$$
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    3,938

    Nooooooooooooooooooo! :happysad: :happysad:...

    Nooooooooooooooooooo! :happysad: :happysad: :happysad:
  19. A motor draws more current at lower voltage, not...

    A motor draws more current at lower voltage, not less.

    I have no formula, but using the theory that a motor tends to be a constant-power load, I get 51.97a.

    You can check this against a couple...
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    214$$
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    Each circuit is ​single phase.

    Each circuit is ​single phase.
  21. Replies
    13$$
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    289

    First, I'd use fewer 20a circuits. Second, you'd...

    First, I'd use fewer 20a circuits. Second, you'd need 12-4 to supply three phases to a neutral. 3-conductor only gets you two circuits. You are using MC and not NM (presuming suspended ceilings),...
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    14$$
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    347

    Gee, I wish I'd thought of that. :D

    Gee, I wish I'd thought of that. :D
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    9$$
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    247

    It does, but if it doesn't, contact cement works...

    It does, but if it doesn't, contact cement works very well. I even use it to affix wiring under cabinets.
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    14$$
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    347

    I think it won't mass muster if your plan is to...

    I think it won't mass muster if your plan is to use the seventh disconnect. Can you tap into the feeder and place a remote disconnect?

    I recommend contacting your AHJ first, and discuss this.
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    20$$
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    451

    120/240v 1ph. It refers to the opposing polarity...

    120/240v 1ph. It refers to the opposing polarity of the lines from the center tap as the point of reference.
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