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Thread: 120/240 v single phase panel

  1. #21
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    See..... Told you all so.


    JAP>

  2. #22
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    Quote Originally Posted by GoldDigger View Post
    You have still not clarified what kind of loads will be fed from the 120/240 panelboard.
    Sorry again for that.

    I have no 240V loads fed from 240/120v single phase panelboards. They are either 120 or 208V rated at this time. However what if in future someone places 240V load then what?

    Sent from my SM-G935U using Tapatalk

  3. #23
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    Quote Originally Posted by GoldDigger View Post
    You have still not clarified what kind of loads will be fed from the 120/240 panelboard.
    Well if the feeder to the panel is 120/208 volt 1ph , wouldn't it make sense that, that's all they're going to get out of it ?

    JAP>

  4. #24
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    He indicated this was a new installation.

    He's not re feeding an existing 120/240v 1ph panel.

    JAP>

  5. #25
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    Jul 2005
    Location
    Tennessee
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    15,750
    If you have no 240v loads you are good to go !
    At my age, I'm accustomed to restaurants asking me to pay in advance, but now my bank has started sending me their calendar one month at a time.

  6. #26
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    Quote Originally Posted by GoldDigger View Post
    The OP might. He asked about feeding a 120/240 three wire single phase panel, he did not specify that there were only line to neutral loads on that panel.
    A complete answer to his question would have to note that it could not drive 240V loads unless they were also rated for operation at 208V.
    He actually asked if he could feed a 120/240v three wire single phase panel with 120/208v three wire single phase, period, and the answer is yes.




    JAP>

  7. #27
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    Quote Originally Posted by codequestion View Post
    Sorry again for that.

    I have no 240V loads fed from 240/120v single phase panelboards. They are either 120 or 208V rated at this time. However what if in future someone places 240V load then what?

    Sent from my SM-G935U using Tapatalk
    They need to be smart enough to know that they will need a boost transformer on the branch circuit coming out of the 208v subpanel.

    JAP>

  8. #28
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    Sep 2008
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    UK
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    Quote Originally Posted by jap View Post
    He actually asked if he could feed a 120/240v three wire single phase panel with 120/208v three wire single phase, period, and the answer is yes.
    Except it wouldn't be single phase. Maybe that doesn't matter for his application.
    Si hoc legere scis nimium eruditionis habes.

  9. #29
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    May 2005
    Location
    Richmond, Virginia
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    22,634
    It seems some of you like to argue just to argue.

    Yes, it's okay to feed a 1-ph panel from a 3-ph source, as long as it's understood that the line-to-line voltage is 208 and not 240.

    It;s that simple.
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  10. #30
    Join Date
    Jun 2004
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    Cherry Valley NY, Seattle, WA
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    Quote Originally Posted by Besoeker View Post
    Except it wouldn't be single phase. Maybe that doesn't matter for his application.
    I think I mentioned this to you last time this came up, but here in the states we call two phases, even if there is a neutral, single phase.
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

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