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Which coloured wire is used for grounding connection? 

Which coloured wire is used for grounding connection?  Correct Answer Green

Concept:

Function

Colour code

Single-phase line

Red/Brown

Single-phase neutral

Black/Blue

Ground wire

Green

Three-phase line 1

Red

Three-phase line 2

Yellow

Three-phase line 3

Blue

Three-phase neutral

Black

Three-phase protective ground or earth

Green (or) Green - Yellow
Neutral wire (3-core flexible cable) Blue
 

Explanation:

A ground wire provides a conducting path to the earth which is independent of the normal current-carrying path in an electrical appliance.

This protects against electric shock and we use green color to grounding in every electric connection.

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