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-   -   2 main breakers on sub feed? (https://www.askmehelpdesk.com/showthread.php?t=572257)

  • Apr 23, 2011, 10:54 AM
    pmcar1
    2 main breakers on sub feed?
    I am backfeeding an existing 200 amp panel from a new 400 amp 1ph 120/240v service that is 60 feet away. The existing panel has a 200 main breaker. I am planning on a 200 breaker in the new 400 amp panelboard to protect the subfeed conductors (SER 4/0 AL). Are there any NEC rules against having more than one overcurrent device in the subfeed circuit?
  • Apr 23, 2011, 12:44 PM
    stanfortyman

    No there isn't.

    I am curious though. Are you the owner? Contractor? Electrician?
    Anyone doing work on a scale like this should NOT have to ask these questions.

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