Routing of SPD Conductors

The conductors used to connect the surge protective device to the line or bus and to ground shall not be any longer than _____ and shall avoid unnecessary bends.

a) 6 in.
b) 12 in.
c) 18 in.
d) necessary

See answer and applicable Code reference

The correct answer is: d) necessary

Article 285 covers general installation and connection requirements for surge-protective devices (SPDs). As noted in Sec. 285.12, "The conductors used to connect the SPD to the line or bus shall not be any longer than necessary and shall avoid unnecessary bends."

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