Doug Miller wrote:
In article .com, Guy Noir wrote:
Question: I have installed central air and I no longer need to 220v
window AC outlets.

They are wired with romax and the colors of the conductor insulation
are Black, Red, and White.

No bare wire??

With the current cost of copper, I hate to replace these runs.

Standard color codes are of course black, white, copper/gnd. If I
rewire this for 110v what colors should I put where? I read somewhere
in the code that you can re-identify a cable with colored tape (green
for instance for the wire used for ground)

That is not correct. Grounding conductors larger than 6AWG are permitted to be
re-identified in that manner, but not 6AWG and smaller. [2005 NEC, Article
250.119]
So, should I use black-hot white-neutral and red-green taped at each
end for ground? Does this meet NEC code or at least come close??

No.

Doesn't meet letter of the code, but I'd not hesitate to do so, myself.
If certainly meets everything but the color and the electrons don't
know the difference. The marking needs to be substantial enough so as
to be relied upon for staying there.

My personal opinion on it is that it is old work, not new and there's no
inspector I've ever seen who wouldn't make reasonable allowance for that...

Others opinions/choices/etc., may differ of course...

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