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Lighting Branch Circuit Calculations

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    Lighting Branch Circuit Calculations

    Does it state in the NEC that lighting loads are continuous? Is it just our knowledge that the circuits we are considering a calculation for are continuous? I was always taught to never load a lighting circuit to more than 80 %. Thank you, Trent

    #2
    No, it states load that continue 3 hours

    Sent from my Nexus 5 using Tapatalk

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      #3
      Originally posted by t-bird View Post
      Does it state in the NEC that lighting loads are continuous? Is it just our knowledge that the circuits we are considering a calculation for are continuous? I was always taught to never load a lighting circuit to more than 80 %. Thank you, Trent
      No it does not.

      Lighting loads can be either continuous or not.

      For instance the sales floor lighting in a store would be considered continuous. On the other hand a closet light would not be.

      The determining factor is found in article 100.

      Continuous Load. A load where the maximum current is expected to continue for 3 hours or more.

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