National Electrical Installation Standards

Standards as High as Your Own

Tuesday, August 24, 2021


Hi all and again great job with the CQD.

My question is regarding 6' lighting fixture power whips. The LED fixtures and whips are in a college classroom with a drop ceiling, if that matters. The lighting circuits are in EMT conduit with a 4" square junction box located within a few feet of each fixture. Each fixture is fed from the closest 4" square with a 6' fixture whip. Two questions have been raised regarding this installation. The first is if it's okay to use 18AWG TFFN wire in the whips? The second is do the whips require any means of support or secure other than the connector at each end of the whip?

Thank you,

Rich Cressotti



Hello Rich,

Using the whips with the 18 AWG tap conductors is acceptable and meets the requirements in 410.117 and 210.19(A)(4). The support requirements for the whips mentioned in the question are addressed in 348.30(A) Exception No. 3 which relaxes the securing and supporting requirement.

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