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Type: Posts; User: infinity

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  1. Replies
    11$$
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    227

    2014 eliminated the derating requirement if you...

    2014 eliminated the derating requirement if you use XHHW conductors, for other insulation types you still need to use table 310.15(B)(3)(c). The 2017 requires the minimum of 7/8" above the surface...
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    9$$
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    259

    You will need the neutral. For a 208Y/120 volt...

    You will need the neutral. For a 208Y/120 volt feeder at 150 amps you could use #2/0 or #3/0 Al MC cable or SE cable.
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    11$$
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    227

    As Digger stated it depends on the code cycle. ...

    As Digger stated it depends on the code cycle. Under the 2017 if your raceway is elevated above the roof (I believe) 7/8" no derating required.
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    6$$
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    148

    It's just the way the math works with 31% and 40%...

    It's just the way the math works with 31% and 40% fill.

    I think that Dennis meant 40% for Annex C.
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    4$$
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    210

    Sounds like they want a bonding jumper from the...

    Sounds like they want a bonding jumper from the conduit to the EGC bus via a wire.

    http://www.ecmweb.com/sites/ecmweb.com/files/uploads/2008/02/250-97-01web.jpg
  6. Thread: Sub Panel

    by infinity
    Replies
    10$$
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    326

    I agree. If the feeders are run in a metal...

    I agree.

    If the feeders are run in a metal raceway or armored cable it might be compliant.
  7. Thread: 360 and more

    by infinity
    Replies
    30$$
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    805

    360 is the limit. On occasion will bypass the...

    360 is the limit. On occasion will bypass the pull point in the middle and pull through 5 or 6 elbows with large conductors especially if part of the run is vertical and we're feeding down. Don't...
  8. Thread: 600 THHN

    by infinity
    Replies
    3$$
    Views
    268

    A highly skilled cable pulling team should easily...

    A highly skilled cable pulling team should easily beat your estimate as long as they have everything that they need. A bunch of neophytes trying to pull 600's will probably lose you money every...
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    19$$
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    675

    I would need to see documentation prohibiting the...

    I would need to see documentation prohibiting the drilling of a KO before I would say that. We only use panels with no KO's.
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    2$$
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    225

    If you look at T250.102(C)(1) you'll see that it...

    If you look at T250.102(C)(1) you'll see that it stops at 1100 kcmil. When your total kcmil for the parallel sets exceeds the 1100 kcmil the main bonding jumper needs to be large enough to carry the...
  11. Thread: Amp Ratings

    by infinity
    Replies
    8$$
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    372

    If you used MC cable or conduit and wire you...

    If you used MC cable or conduit and wire you could use the 75° C ampacity to size the conductors as long as you had 75° C terminals on the circuit breaker and disconnect (if used). So #12 MC cable...
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    17$$
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    634

    So if this is a 30 amp circuit how is anything...

    So if this is a 30 amp circuit how is anything violated by installing a 30 amp fuse?
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    1$$
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    194

    It's the smallest amount you can measure with...

    It's the smallest amount you can measure with your ruler. :D

    There is no minimum distance, it just needs to outside of the edge of the tub.
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    17$$
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    634

    What is the maximum allowable size of OCPD...

    What is the maximum allowable size of OCPD permitted for this type of circuit?
  15. Replies
    10$$
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    437

    It's most likely that the contactor is either...

    It's most likely that the contactor is either open or closed (there are some other odd variations) and is controlled by providing control voltage on the latch and unlatch terminals (yel, org, wht in...
  16. Replies
    10$$
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    437

    If you look at photo #3 you'll see that you have...

    If you look at photo #3 you'll see that you have a 12 pole, probably mechanically held (latching) contactor. The three wires (wht, yel, or) on the top (photo is sideways) are for the control. These...
  17. Replies
    3$$
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    138

    In general the GEC can only be irreversibly...

    In general the GEC can only be irreversibly spliced. It can terminate on a common terminal with a bonding jumper to the X0.
  18. Replies
    14$$
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    578

    A majority of the time yes.

    A majority of the time yes.
  19. Replies
    14$$
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    578

    As Dave mentioned if it's solid filled then core...

    As Dave mentioned if it's solid filled then core drill, if the blocks ares still hollow then chop the hole. Solid filled walls also may have rebar in them which is easier to core drill through.
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    5$$
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    220

    Here in NJ we have unified statewide code, across...

    Here in NJ we have unified statewide code, across the border in New York they seemingly have no statewide code and they have all different adoptions and local rules.
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    2$$
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    200

    Dedicated equipment space is only required for...

    Dedicated equipment space is only required for the stuff on the list. So you're fine if you only above the wireway.
  22. Replies
    39$$
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    922

    Yes you need both receptacles. We just did a 720...

    Yes you need both receptacles. We just did a 720 unit building with the stackable washer and dryer requiring a single 30 amp receptacle. So we installed another 20 amp receptacle right next to it....
  23. In NJ the rehab code would not require him to add...

    In NJ the rehab code would not require him to add anything.
  24. It always was a bathroom by definition so IMO the...

    It always was a bathroom by definition so IMO the shower does not change a thing.
  25. Replies
    7$$
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    284

    Yes they can occupy the same panel you would just...

    Yes they can occupy the same panel you would just need to identify the conductors that are passing through.
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