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 Air-Conditioning and Refrigerating Equipment 440.9 Grounding and Bonding September 5, 2021 220.12 General Lighting Loads “NOT TO BE USED UNTIL 12/31/23” April 1, 2023 310.15(B)(7) 120/240-Volt, Single-Phase Dwelling Services and Feeders. February 17, 2019 Leave a ReplyYou must be logged in to post a comment.