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easyMCQUPTET Paper 2 (Maths & Science)2017Mathematics and Science
1 mark

In household wiring, what is the standard colour of the 'earth wire'?

  1. A
    Red
  2. B
    Green
  3. C
    Black
  4. D
    White

Solution & Step-by-step Explanation

Under standard conventional electrical wiring safety codes guidelines:
Live Wire: Red (or Brown)

Neutral Wire: Black (or Blue)

Earth Wire: Green (or Green-Yellow stripe)

The earth wire is colored green as a safety convention and is connected to a metal plate buried deep in the ground to safely redirect leakage current and prevent electrical shocks.

Practice this question

Try it yourself before checking the explanation above.

In household wiring, what is the standard colour of the 'earth wire'?
A
Red
B
Green
C
Black
D
White

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