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400a service

  1. C

    400A Meter Main Questions

    Hello All, I have a question concerning the 2020 NEC Changes in 230.70, 230.71, specifically 230.71(B): Prior to 2020 NEC, a 400A meter Main allowed 2 x 200A Main Breakers in the same cavity/enclosure. According to the 2020 NEC, a change was made which required each 200A Breaker be separated...
    • CFD925
    • Thread
    • 400a service nec 2020 changes nec 2023 service conductors service disconnect
    • Replies: 9
    • Forum: Electrical Codes
  2. jar546

    A Lesson in Bonding Service Enclosures

    Today's lesson is brought to you by our own Chris Kennedy who "schooled" me today on a situation that I encountered. He and I are back and forth trying to school each other and as of right now, he is ahead by 1. So here is what I was looking at, a simple 120/240 single phase, 400A commercial...
    • jar546
    • Thread
    • 400a service bonding bonding ct cabinet ct cabinet electrical service nec
    • Replies: 2
    • Forum: Electrical Codes
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