Code Q&A: Sizing Bonding Jumper for Parallel Raceways

NEC guidelines for sizing supply side bonding jumpers for parallel raceways

Q. What are the rules for sizing a supply side bonding jumper for parallel raceways?

Find the Answer

A. If the ungrounded supply conductors are paralleled in two or more raceways or cables, you must size the supply-side bonding jumper for each raceway or cable in accordance with Table 250.102(C)(1), based on the size of the largest ungrounded conductor in each raceway or cable [Sec. 250.102(C)(2)].

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