Multi-wire branch circuits Post author:Jake Post published:August 6, 2012 Post category:Code Change of the Week Post comments:0 Comments When sharing the Neutral of a multi-wire branch circuit, the circuit breaker has to be common trip. Single phase, Three phase circuits now require a 2 pole or three pole circuit breaker. You Might Also Like 2014 Code Change 110.21 (B) Field-Applied Hazard Markings. July 2, 2016 2017 Code Changes March 2, 2019 314.16(A) Box Volume Calculation 2017 Code Change December 13, 2020 Leave a ReplyYou must be logged in to post a comment.