insulation colors

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Natural gray was written out of the code book a couple cycles ago and is not addressed as it is a color no longer available.

White, green and green w/one or more yellow stripes have strict usages.

Orange is specified for a specific use in certain 3-phase systems.

Other colors, such as blue, red, etc. have certain requirements in specific uses.
 
480sparky said:
Natural gray was written out of the code book a couple cycles ago and is not addressed as it is a color no longer available.
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Not "natural gray", but 2011 200.6(A) (2) states a grounded conductor
#6 or smaller can be identified by "a continuous gray outer finish", so
it sounds like "gray" is specified, whether "natural" or not.

I have a reel of natural gray 12 THHN on my truck - the supply house guy
told me I was the only one who ever bought it from him. I think I got his
last reel, and he isn't going to order any more - sounds like it may not be
made any more.
 
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don't forget colors brown and orange for isolated power supplie art 517.160 and there are some colors in 424.35 for heat cables.
 
natural gray is not gray as most know it it has been described as
Opaque, I have also heard it described as milky. Gray as most know it is called Hull Gray (at least in the USN)
 
Natural gray, in the electrical industry, is almost indistiguishable from white.

White:





Natural Gray:

NaturalGray.jpg




Gray that we use all day as 'lekturshuns:

Gray.jpg
 
where did you get those color chips?

At the paint store you can get a chip " natural Grey" its a bit darker than you might think!
 
480sparky said:
I made 'em up.




I can call any shade and/or color I want 'natural gray'. :)
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well sort of, There are standard colors I think they are called PMS. When it comes to color in most every industry they are the reference.
 
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