Multiwire Branch Circuits Explained
4:31
Two circuits sharing one neutral sounds simple, but that shared wire creates a safety requirement most people overlook — and getting it wrong can leave a conductor energized when someone thinks it's dead.
In this lesson: the Article 100 definition, the classic opposite-leg 120/240 example, why pulling both hots from the same leg is dangerous, how a balanced multiwire circuit keeps the neutral nearly unloaded, the 210.4(B) simultaneous disconnect requirement and handle ties, the 210.4(D) grouping requirement, AFCI/GFCI protection on multiwire circuits, 120/208 three-phase multiwire circuits and why their neutral math is different, and the kitchen counter circuit application.
