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    Lighting Branch Ckts

    can you use 30 amp ckt a for commercial lighting (fluorescents) I always thought lighting had to be on 15 or 20 amp ckts.

    #2
    see 210.23(B)
    Last edited by jusme123; 05-29-14, 11:41 PM.

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      #3
      also 210.21(A)

      The intent of 210.21(A) is to restrict a fluorescent lighting branch-circuit rating to not
      more than 20 amperes because most lampholders manufactured for use with
      fluorescent lights have a rating less than that required for heavy-duty lampholders (660
      for admedium type or 750 watts for all other types).
      Branch-circuit conductors for fluorescent electric-discharge lighting are usually
      connected to ballasts rather than to lampholders, and, by specifying a wattage rating for
      these lampholders, a limit of 20 amperes is applied to ballast circuits.
      Only the admedium-base lampholder is recognized as heavy duty at the rating of 660
      watts. Other lampholders are required to have a rating of not less than 750 watts to be
      recognized as heavy duty. The requirement of 210.21(A) prohibits the use of mediumbase
      screw shell lampholders on branch circuits that are in excess of 20 amperes.

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