1(xi)
According to the old convention, the colour of the earth wire is :
- (a)black
- (b)green
- (c)yellow
- (d)red
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green
Reason — The colour coding is given below :
| Wire | Old Convention | New Convention |
|---|---|---|
| Live | Red | Brown |
| Neutral | Black | Light blue |
| Earth | Green | Green or Yellow |