Based on the 2020 NEC.
Question: True or false? Temporary wiring can only be installed for a maximum of 90 days.
See answer below.
Answer: False
Explanation: Section 590.3 of the 2020 NEC specifies the time constraints for temporary wiring. Temporary wiring is allowed for the period of construction or remodeling with no time limit. Temporary wiring is allowed for a period of 90 days for holiday decorative purposes. Temporary wiring is allowed for emergencies, tests, and developmental work without a time constraint. All temporary wiring is to be removed immediately after construction completion or the purpose for which it was installed.
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.