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Used Diesel While We Wait for Delivery = Black Smoke

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Comments

  • mattmia2
    mattmia2 Member Posts: 11,462

    so then how would a main lug panel with a backfed breaker supplying the panel work?

  • ChrisJ
    ChrisJ Member Posts: 16,428
    edited January 12

    I don't understand?

    My 100A panel has a limitation of something like 100-150A per location.

    How would that not work in your question?

    Let's say it's 100a on my panel. It means I have a 80a two pole breaker for my sub panel on the I'm left and to the right of it I have two 20s. That's 100a for that location and it's technically maxed out. You couldn't do an 80 two pole and then 40s across from it.

    The larger 200a panels allow higher. I think 200 actually.

    Here's a thread on it.

    https://www.electriciantalk.com/threads/max-breaker-size-for-qo-load-center.276384/

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • mattmia2
    mattmia2 Member Posts: 11,462
    edited January 12

    if it is backfed through a breaker, all of the current flowing on the bus has to enter through that position so any position on the bus has to be capable of carrying the full current of the bus.

    the larger breakers taking 2 positions per pole solves the problem of the stab being rated for less than the bus. if you are using a breaker listed for use i that panel it will take 2 positions per pole if one stab can't handle the current.

    we have drifted way off topic here.

    ksand2994
  • ChrisJ
    ChrisJ Member Posts: 16,428
    edited January 12

    Yes we have

    But you're still asking a question that makes no sense. If you can install a 100A breaker in a 100A panel that breaker can carry the entire load of the bus. You just may but not be able to install breakers adjacent to it.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • HVACNUT
    HVACNUT Member Posts: 6,525
    edited January 12

    There's two breakers marked A/C. What are they connected to? Is there central air conditioning AND a ductless system for the sun room?