The colour code
for non – flexible as well as flexible cable as per NEC ( National Electrical Code - India ) is given as below.
Colour code for non – flexible cable
Single Phase AC
|
Phase
|
Red / Yellow / Blue
|
Neutral
|
||
Three Phase AC
|
Phase R
|
Red
|
Phase Y
|
Yellow
|
|
Phase B
|
Blue
|
|
Protective / Earthing
|
Green / Yellow
|
|
DC Two wire
|
Positive
|
Red
|
Negative
|
Black
|
|
DC Three wire
|
Positive
|
Red
|
Middle
|
Black
|
|
Negative
|
Blue
|
|
Functional earth
telecommunication
|
Cream
|
Colour code for flexible cable
Number
of cores
|
Core
|
Colour of core
|
1
|
Phase
|
Brown
|
Neutral
|
Light blue
|
|
Protective or
earthing
|
Green and Yellow
|
|
2
|
Phase
|
Brown
|
Neutral
|
Light blue
|
|
3
|
Phase
|
Brown
|
Neutral
|
Light blue
|
|
Protective / Earthing
|
Green and Yellow
|
|
4
/ 5
|
Phase
|
Brown / Black
|
Neutral
|
Light blue
|
|
Protective / Earthing
|
Green and Yellow
|
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