True or False? When calculating the volume required for a box, a single volume allowance of one conductor (based on the largest equipment grounding conductor) is required for all EGCs in the box.
See the answer below.
Answer: False
Explanation: A change in the 2020 NEC to Sec. 314.16(B)(5) now requires a single allowance for up to four equipment grounding conductors (EGCs) and an additional ¼ volume allowance for each conductor exceeding four.
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.
