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Thread: Tandem Breakers

  1. #1

    Default Tandem Breakers

    I have a 100A Siemens panel with 20 breaker positions. It currently has 2 tendem breakers installed.
    I want to add a few extra circuits in my basement. How many additional tandem breakers can be added?


  2. #2


    For the best answer, ask the manufacturer of the panel. (Get it straight from the horse I say!)...


  3. #3
    Jack of all trades frenchie's Avatar
    Join Date
    Dec 2006
    Brooklyn, NY and Fire Island, NY


    Need the model number of the panel, to answer that.

    Example: Siemens model #G3040B1200CP.

    Has 30 spaces (#G3040B1200CP)

    Can have 40 circuits (#G3040B1200CP)

    ... so, a max of ten tandem breakers.
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