Grounded Conducter Size

[Gary Webster]

What is the smallest size of grounded conductor that does not have to be white or gray for its entire length?
N.E.C. 2008 Edition states in Section 200.6 B-3: "Sizes larger than 6 AWG (at the time of installation, ...a distinctive white or gray marking at its termination. this marking shall encircle the conductor or insulation.".

 

[infinity]

Here's the entire section relating to larger than #6 AWG conductors:

200.6(B) Sizes Larger Than 6 AWG. An insulated grounded conductor larger than 6 AWG shall be identified by one of the following means:
(1) By a continuous white or gray outer finish.
(2) By three continuous white stripes along its entire length on other than green insulation.
(3) At the time of installation, by a distinctive white or gray marking at its terminations. This marking shall encircle the conductor or insulation.

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[jumper]

For some reason that section has been misconstrued by many people to include #6. So, 2011 has a small change.

(B) Sizes 4 AWG or Larger. An insulated grounded conductor
4 AWG or larger shall be identified by one of the
following means: