National Electrical Installation Standards

Standards as High as Your Own

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Monday, January 13, 2020

Question:

If I used a length of 1-inch aluminum rigid conduit (10-foot sleeve) for physical protection of a grounding electrode conductor installed on a wall, is bonding required from the contained grounding electrode conductor to the conduit at both ends where the conductor enters the sleeve and where it exits?

Thanks for any clarification you can provide.

Alex Holtz 

 

A

Answer:

Hi Alex,

Bonding from the grounding electrode conductor to both ends of the raceway is required by the NEC. Aluminum conduit is not a ferrous metal raceway which is what the requirements in Section 250.64(E)(1) applies to. The requirement could also be satisfied using Schedule 80 PVC conduit, if the type of construction allows for that. 

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