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Type: Posts; User: mstrlucky74

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  1. Replies
    2$$
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    Feeder Size

    Two questions.

    1.Have a 120/208v 400A fused switch feeding sprinkler booster pump controller( the pump is 30HP) with 3#2 & 1#3 MU cable. According to Pyrotenax website(for the MI) and 310.17 #2 is...
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    Thanks. So the feeder conductors needs to be...

    Thanks. So the feeder conductors needs to be sized to the OCPD at the source?
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    Combining Voltages

    I know it's always prohibited per spec but is allowed per code to combine 120/208v with 277/480v in same raceway? Thanks.
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    395

    Feeder Size

    So have uinknown feeder size and unknown source feeding an exting 250A main breaker panel that is being relocated. We have to extend feeder to new panel location. Obviously have to know extg. feeder...
  5. Thread: EM Inv.

    by mstrlucky74
    Replies
    6$$
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    432

    EM Inv.

    Have a lighting inverter(has battery backup), fed from normal panel, feeding EM lights. Any code reason why you could run these circuits and the norm in same conduit?
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    PNL BUS/BRKR RATING

    In what situation would a panelboard have different amperage for the MCB and the bus? Most times I see them the same but do remember them being different once in while? Thanks.
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    There is not. Why do you say that?

    There is not. Why do you say that?
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    Fire Alarm Conduit

    Scenario. Fire alarm is in full conduit and adjacent speaker and strobes have to be on separate ckts.

    Question, wouldn’t putting a 4” box above the device alleviate you having to run 2 conduits...
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    5$$
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    Thanks Ron. If you have a OCPD( in a panel or...

    Thanks Ron. If you have a OCPD( in a panel or gear) feeding another panel the conductors should be sized off the rating of the OCPD feeding the panel/gear, correct?
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    5$$
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    485

    We have to cut back and extend as existing...

    We have to cut back and extend as existing panel(PP5) being relocated.
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    5$$
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    485

    Conductor Size

    Switch/fuse size not given for the feed to PP5-2. That would be needed in order to size conductors, correct?
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    So you're using the 90-degree column for...

    So you're using the 90-degree column for ampacity. Why?

    Sent from my SM-N960U using Tapatalk
  13. Replies
    11$$
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    Derating for # of CCC

    If you run a 6 ckt EMT homerun(all 1p-20a for receptacles) from panel and each circuit is required to have separate neutral that would be 12 CCC. 2 questions.
    1. Which column would you use from...
  14. Thread: NEW VFD

    by mstrlucky74
    Replies
    0$$
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    516

    NEW VFD

    Sorry guys, I know I previously posted almost same but I think think this better depicts.

    The pick shows the existing feeders.
    Motors now being replaced and new VFD's be installed(2nd pic).
    Have...
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    12$$
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    1,883

    It's pretty obviously "can" should be "can't" by...

    It's pretty obviously "can" should be "can't" by reading the entire sentence.No need to be a.....:p
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    Agree..[emoji16]...just have to be sure when they...

    Agree..[emoji16]...just have to be sure when they say ALL fire alarm conduits..what would you think?

    Sent from my SM-N960U using Tapatalk
  17. Replies
    7$$
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    Hey Joe. Still don't get it. Power to FACP's,...

    Hey Joe. Still don't get it. Power to FACP's, DGPS etc. is run separately from FCO's. I thought that note meant ALL fire alarm conduits meaning even those running to smokes, strobes etc.
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    7$$
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    FA CONDUIT WIRE

    Say a note that said all fire alarm conduits must have #10 ground wire. Anyone ever see this. Makes no sense.
  19. Thread: WF Switch

    by mstrlucky74
    Replies
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    571

    WF Switch

    For fire alarm does a water flow switch need both a monitor and control module?
  20. Replies
    12$$
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    Exactly ... Sent from my SM-N960U using...

    Exactly ...

    Sent from my SM-N960U using Tapatalk
  21. Replies
    12$$
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    1,883

    :D

    :D
  22. Replies
    12$$
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    1,883

    Understand but we can run MC directly into panel...

    Understand but we can run MC directly into panel so we have to splice( transition from EMT to MC) no matter what.
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    12$$
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    1,883

    Why would the separate neutral have you run MC...

    Why would the separate neutral have you run MC instead? You could run a multiple neutral MC.
  24. Replies
    12$$
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    Means/Method

    So if you had a job that allowed MC but spec says have to run conduit out of panel to first box( usually guys run a 20’ HR from panel to box) and you had the panel about 80’ away from this area and...
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    DL On EM Ckt

    If your running MC cable and a norm circuit you can run right into the j-box that's attached to the down light housing. It shouldn't be any different with an emergency circuit(fed from EM panel) run...
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