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Lighting Branch Circuit Calculations

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  • iwire
    replied
    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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  • victor.cherkashi
    replied
    No, it states load that continue 3 hours

    Sent from my Nexus 5 using Tapatalk

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  • t-bird
    started a topic Lighting Branch Circuit Calculations

    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
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