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In North America the neutral pin is used to complete the circuit. One pin is "hot", one pin is neutral and the last pin is ground.

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Q: Why you use neutral pin in three pin plug?
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Why you use three pin plug insted of two pin?

In an electrical socket, there are three holes. One is a hot wire, one is a neutral wire, and one is a ground wire. Usually, the hot wire is black. The neutral wire is white. And the ground wire is green. Motors usually have three pin plugs. Other items also have them. When a motor has a three pin plug, the body of the motor is attached to the ground. If a spark goes from the electrical wires to the body of the motor, it will go harmlessly to the ground and not hurt anyone. On a two pin plug, usually one pin is larger than the other. The larger pin goes to the neutral or white wire. It is also grounded. That way if there is an electrical short in the device, it should not electrocute the person using it.


Is it okay to use an adapter to change a three pin plug into a two pin plug?

No, it is not ok, it is potentially very dangerous because the two-wire cable has no earth with it. The earth wire is an important safety component that comes with a three-pin plug. An exception can be made for certain low-power appliances that have double insulation. This includes TV sets, radios, and table lights provided the mounting is plastic and not metal. These appliances are commonly sold with a twin-wire cable but often with a three-pin plug on the end of it. The three-pin plug in this case often has a plastic 'earth' pin and it is safe to replace it with a two-pin plug.


Can I plug my 2 prong Christmas light cord into a 3 prong extension cord?

UK answer only: Yes but you need a three-pin to two-pin adaptor. Alternatively fit a three-pin plug to the light and leave the earth pin disconnected. This can only be done if the lamp already has a two-wire cable fitted to it, anything else is potentially dangerous.


Which plug is safe to use in the 3 pin plug?

3 pins plug


Which electrical plug in Gibraltar?

In Gibraltar they use the type-G three-pin plugs as used in the UK. The type-C two-pin as used in Europe is also found there.

Related questions

When use a 3-pin mains plug what is the biggest pin for?

On a UK three pin plug the two smaller prongs are Live (brown) and Neutral (blue). The Larger pin is for the Earth wire. This can prevent you getting an electric shock


When you use a three pin plug what is the third biggest pin for?

Would that be the smallest pin. To answer this question the specifications of the plug will be needed.


Why you use three pin plug insted of two pin?

In an electrical socket, there are three holes. One is a hot wire, one is a neutral wire, and one is a ground wire. Usually, the hot wire is black. The neutral wire is white. And the ground wire is green. Motors usually have three pin plugs. Other items also have them. When a motor has a three pin plug, the body of the motor is attached to the ground. If a spark goes from the electrical wires to the body of the motor, it will go harmlessly to the ground and not hurt anyone. On a two pin plug, usually one pin is larger than the other. The larger pin goes to the neutral or white wire. It is also grounded. That way if there is an electrical short in the device, it should not electrocute the person using it.


Is it okay to use an adapter to change a three pin plug into a two pin plug?

No, it is not ok, it is potentially very dangerous because the two-wire cable has no earth with it. The earth wire is an important safety component that comes with a three-pin plug. An exception can be made for certain low-power appliances that have double insulation. This includes TV sets, radios, and table lights provided the mounting is plastic and not metal. These appliances are commonly sold with a twin-wire cable but often with a three-pin plug on the end of it. The three-pin plug in this case often has a plastic 'earth' pin and it is safe to replace it with a two-pin plug.


Can I plug my 2 prong Christmas light cord into a 3 prong extension cord?

UK answer only: Yes but you need a three-pin to two-pin adaptor. Alternatively fit a three-pin plug to the light and leave the earth pin disconnected. This can only be done if the lamp already has a two-wire cable fitted to it, anything else is potentially dangerous.


Which plug is safe to use in the 3 pin plug?

3 pins plug


Is the UK 3 pin plug used in Eire?

Both use the same kind of 3 pin plug.


Which electrical plug in Gibraltar?

In Gibraltar they use the type-G three-pin plugs as used in the UK. The type-C two-pin as used in Europe is also found there.


Why you use cut mark in three pin plug?

It is used to show the correct length that the wire has to be stripped to make a perfect termination. By using this mark no bare conductor will be exposed when the plug is assembled for use.


What plugs do you use in Singapore?

3 pin plug


What pin on a power plug is the earth pin?

The third pin usually on the bottom is the pin that goes to the ground/earth.See Sources and Links below.AnswerIt really depends on what type you plug you are using. From your use of the word. 'earth' (rather than 'ground'), you may be referring to the plugs used in the UK, Ireland, and places like Malta, Cyprus, and the Gulf States? If so, then the earth pin is the longest of the three, and located at the top of the plug. Some European plugs don't use an earth pin at all -in Germany, for example, they use a pair of contacts located in the moulded recesses located on each side of the plug.


How many volts does a mains plug use?

This completely depends on whereabouts you live. For example: In the UK = 230 V In the USA =120 V It is less in the USA because they think it is safer, this is nonsense because anything over 60 volts will kill you. As in the US and Canada, UK sockets have three contacts: line, neutral, and protective conductor (earth). The line and neutral contacts are protected from interference by the use of shutters that are opened by the plug's earth pin.