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Monday, February 15, 2021
Question:
What is the minimum-sized copper bonding jumper for metal parts (dead metal) located on the secondary of a neon outline lighting system, if the neon transformer is supplied by a 30-ampere branch circuit?
Carl Thompson
A
Answer:
Section 600.7(B)(7) requires not less than 14 AWG copper for the minimum size binding jumper in the installation you described. There should be at least a 10 AWG copper equipment grounding conductor with the 30-ampere supply branch circuit for the outline lighting system.