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What is the difference between a Combination Type AFCI and a Branch/Feeder AFCI?

April 26, 2017afci branch combination difference feeder type

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What is the difference between a Combination Type AFCI and a Branch/Feeder AFCI?

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The Siemens Combination Type AFCI provides protection against all three types of arcs (series, line-to-neutral, and line-to-ground). The Combination Type meets all the 1999 and later NEC® requirements. It is specifically required by the 2005 NEC® beginning January 1, 2008. The original Branch/Feeder AFCI’s provided protection against only two types of arcs (line-to-neutral and line-to-ground). It could used to meet the requirements of the 1999-2002 NEC® and the 2005 NEC® until January 1, 2008.