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METHOD 1 - This color code system employs six (6) different base colors alternating through a series of 21 conductors.

In this series, the last 15 conductors are marked with tracers of contrasting colors. The color sequence is repeated in regular sequence as necessary for cable configurations employing more than twenty-one (21) conductors.

CONDUCTOR NO.	BASE COLOR	TRACER COLOR
1	Black	n/a
2	White	n/a
3	Red	n/a
4	Green	n/a
5	Orange	n/a
6	Blue	n/a
7	White	Black
8	Red	Black
9	Green	Black
10	Orange	Black
11	Blue	Black
12	Black	White
13	Red	White
14	Green	White
15	Blue	White
16	Black	Red
17	White	Red
18	Orange	Red
19	Blue	Red
20	Red	Green
21	Orange	Green