DIYbanter - View Single Post

In article ,
says...
If you have only three wires (Black, Red & White) you should use the Black &
Red for your Hot leads (interchangeable) and the white as the ground.
Running a 220v piece of equipment without grounding it is dangerous. I
recommend using green tape or colored marker to change the end of the white
wire green so in the future others will know it is a ground.

This is a Code violation in nearly any residential application:
"Individually covered or insulated equipment grounding conductors shall
have a continuous outer finish that is either green or green with one or
more yellow stripes except as permitted by this section." {NEC 2005,
Art. 250.119] The exceptions are (a) conductors larger than AWG 6, and
(b) "where conditions of maintenance and supervision ensure that only
qualified personnel etc. etc. etc."