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 110.21 (B) Field-applied Hazard Markings. September 10, 2016 225.27 RACEWAY SEALS When conduits enter an enclosure from outside of a building. May 1, 2016 2020 Code change for GFCI protection. NOT TO BE USED UNTIL 12/31/23 October 15, 2022 Leave a ReplyYou must be logged in to post a comment.