Question

What is the role of each of the three pins in a power plug?

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Answer 1

Answer:

A three pin plug has the following pins:

1. Live pin through which current is supplied to the device the plug is connected to.
2. Neutral pin which links the return path of the device to the return path of the power outlet
3. .The earth pin links the metallic body of the device to the earthing of the power outlet which runs fault current to ground thereby protecting users.

hope it helps you mate......

Answer 2

The Three Pin Plug

main answer :(It is important to know how to wire a 3 pin plug correctly). 3 pin plugs are designed so that mains electricity can be supplied to electrical appliances safely.

A 3 pin plug consists of three pins (hence the name). Each pin must be correctly connected to the three wires in the electrical cable. Each wire has its own specified colour so as it can be easily identified.

wire 's which are there in the plug :

The LIVE wire is BROWN.

This is connected to a fuse on the live pin. The electric current uses the live wire as its route in.

The NEUTRAL wire is BLUE.

This is the route the electric current takes when it exits an appliance; it is for this reason the neutral wire has a voltage close to zero.

The EARTH wire is GREEN & YELLOW

and connected to the earth pin. This is used when the appliance has a metal casing to take any current away if the live wire comes in contact with the casing.