Question

The reverse side of a three-pin plug with incorrect connection of wires is shown in the diagram below.

1. Identify the fault in the above connection.
2. Mention a risk factor involved, if the user operates the appliance without correcting it.
3. Will the appliance function in the present situation? (Yes or No)

Answer 1

1. The live (red) wire is incorrectly connected to the earth terminal (top thick pin) instead of the live terminal, and the earth (green) wire is also incorrectly connected to the live terminal. Therefore, the live and earth wires must be interchanged.
2. If the appliance is used in this condition, the outer metallic body of the appliance may become live, creating a risk of electric shock to the user.
3. No, the appliance will not function because the wiring connections are incorrect.