Tandem Breakers

Discussion in 'Electrical Forum discussion & Blog' started by RiverdaleWG, Dec 29, 2009.

  1. RiverdaleWG

    RiverdaleWG New Member

    Nov 20, 2006
    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. Billy_Bob

    Billy_Bob In the Trades

    Apr 2, 2008
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  4. frenchie

    frenchie Jack of all trades

    Dec 30, 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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