Code Quiz: Multi-Wire Branch Circuits in Healthcare Facilities
Based on the 2026 NEC.
Question: Are multi-wire branch circuits permitted to supply life safety lighting and power circuits in a health care facility?
See answer below.
Answer: No
Reference: Section 517.15
Explanation: The use of multi-wire branch circuits for life safety was prohibited in Sec. 700.19, however a change in the 2026 NEC section Sec. 517.26 eliminates the requirements of Art. 700 from essential electrical systems in health care facilities. Section 517.15 was added to make it clear multi-wire branch circuits are prohibited to supply emergency loads in a health care facility.
Lupacchino is a senior design engineer with Gaylor Electric, Inc. in Noblesville, Ind. and serves as an alternate on NEC Code-Making Panel No. 3. He is currently licensed in more than 80 jurisdictions. He can be reached at [email protected]
About the Author
John Lupacchino
Senior Design Engineer
John began his career in electrical construction as an apprentice and worked his way through the trade. He is currently licensed in more than 80 jurisdictions. With more than 35 years of experience, he now plays a vital role in Gaylor Electric’s Engineering Department, where he serves as a senior design engineer. With a focus on design engineering, quality assurance, and code compliance, he has earned the highest level of respect from industry professionals alike. John currently serves as an alternate on NFPA 70 Code Making Panel No. 3. In addition, he enjoys sharing his electrical knowledge through education. As an Associated Builders and Contractors instructor, he continues to help grow a new generation of high-performing construction leaders.