Fixture whips

[JdoubleU]

I am installing can lighting and was curious if it is NEC compliant to make my own 6 foot fixture whips using the # 18 fixture wire.

 

[augie47]

As long as you comply with Art 402 and 240.5 I see no problem. A few of the contractors in this area make their own during "slack time"

 

[Hendrix]

I am installing can lighting and was curious if it is NEC compliant to make my own 6 foot fixture whips using the # 18 fixture wire.

I have made hundreds of them, but usually with #14 THHN.

 

[iwire]

I have made hundreds of them, but usually with #14 THHN.

That is a violation unless it is on a 15 amp circuit breaker.

Article 402 does not recognize THHN

 

[infinity]

That is a violation unless it is on a 15 amp circuit breaker.

Article 402 does not recognize THHN

I agree and I see it done all of the time, just a violation that no one really cares about.

 

[victor.cherkashi]

Armored cable type AC is used in office wiring, but I don't see this type in table of article 402

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[iwire]

Armored cable type AC is used in office wiring, but I don't see this type in table of article 402

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Yes those are branch circuit conductors not 'fixture wires'

 

[victor.cherkashi]

Armored cable type AC is used in offices also from j.b. to fixture (as tap conductor) instead to put wires in conduit.

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[victor.cherkashi]

Tap size for lighting fixture specified in 240.5(b)(2) depend on branch c.b.

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[infinity]

Armored cable type AC is used in offices also from j.b. to fixture (as tap conductor) instead to put wires in conduit.

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In that case it would not be a fixture wire according to Article 402.

 

[iwire]

Tap size for lighting fixture specified in 240.5(b)(2) depend on branch c.b.

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If you use fixture wire from 402

 

[victor.cherkashi]

Fixture whips are tap conductor isn't it?

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[infinity]

Fixture whips are tap conductor isn't it?

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You're dealing with a generic/slang term when you say fixture whip or fixture tail for that matter. That terms can mean many different things, if you want to use the words fixture taps then there are specific rules that apply to them. A #12 MC cable from a junction box to a fixture on a 20 amp OCPD would not be a fixture tap but it could be a fixture whip.

 

[Hendrix]

That is a violation unless it is on a 15 amp circuit breaker.

Article 402 does not recognize THHN

Generally, unless specked otherwise, I used 15a circuits for lighting.