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Old 10-18-2010, 08:58 PM   #1
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Does NEC 300.14 apply to pig tails?


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The minimum length of conductors, including grounding conductors, at all boxes shall be 6". At least 3", of every conductor, shall extend outside the box.
Does this apply to pig tails when chaining receptacles? 54" (9x 6") seems like a lot of wire to get in the box.

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Old 10-18-2010, 09:06 PM   #2
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Does NEC 300.14 apply to pig tails?


It applies to the wires the pigtails are attached to.

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Old 10-18-2010, 09:11 PM   #3
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Does NEC 300.14 apply to pig tails?


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Originally Posted by deko View Post
Does this apply to pig tails when chaining receptacles? 54" (9x 6") seems like a lot of wire to get in the box.
it doesn't apply to the pigtails nor do the pigtails count in box fill.

speaking of; have you calculated box fill? It could be you are beyond the legal allowances.
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Old 10-18-2010, 09:35 PM   #4
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Does NEC 300.14 apply to pig tails?


If pigtails do NOT have a required length, is there a best practice or accepted standard? I was thinking 4" seemed about right.

As for box fill calculations:

I have an outdoor receptacle (TR, WP) in a 20A chain (12/2 NM cable) that uses a metal box.

clamps on top and bottom of the box for the cable going in/out, and one grounding screw inside the box = 1
grounding conductors = 1
receptacle = 2
current carrying conductors = 4 (2 white, 2 black)

TOTAL = 8

8 x 2.25 = 18 cubic inches

Is this correct?
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Old 10-18-2010, 09:58 PM   #5
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Does NEC 300.14 apply to pig tails?


fill calc looks correct. (a single duplex recep, right?)

pigtail length: whatever feels right 4" doesn't sound bad. I don't remember ever actually measuring them.
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Old 10-18-2010, 10:06 PM   #6
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Does NEC 300.14 apply to pig tails?


yep, single duplex recep.

The box is 19 cu in so that's probably why it looked stuffed.

I'll go with 4" on the pigtails... just didn't want to give away the fact that I'm a newb too quickly when the inspector looks at it

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