Table of Contents
Why is the earthing pin bigger?
The earth pin is long so that the earth connection is made first. This ensures the safety of the user because if the appliance is defective, the fuse will blow off. The earth pin is made thicker so that even by mistake it cannot be inserted into the hole for the live or neutral connection of the socket.
Why is the size of the earth pin different from the other two pins?
Among these three pins (live, neutral and earth), the earth pin is made longer and thicker than the other two pins, so that when we insert the plug into the socket, the earth pin comes into contact with the power supply before the other two pins, this is because if any unwanted charges are there then they will be …
What is the purpose of the earth pin?
To break contact with the earth point in the power socket after line and neutral while removing the plug. This ensures personal safety until the line and neutral are disconnected. Larger pin provides less resistance to current flow. Hence more fault current can be passed to the ground on the occurrence of a fault.
What is difference between earth and neutral?
The phase line is the one that carries current, the neutral line provides the return path to balance the flow of current, and finally earthing is purely used for safety purposes….Difference Between Earthing and Neutral:
| Earth | Neutral |
|---|---|
| It provides a grounding point for the flow of electricity. | It provides a returning point to the flow of electricity. |
Why is the earth pin longer than the live and neutral?
Why it is Longer? The earth pin should be the first to connect and the last to disconnect with electric supply. This is why earth pin is longer than the live and neutral pin on 3-pin plugins. The earth pin is the last to disconnect from the socket when removing the plug from the socket.
Why earthing is necessary in electrical wiring?
Earthing is used to protect you from an electric shock. It does this by providing a path (a protective conductor) for a fault current to flow to earth. It also causes the protective device (either a circuit-breaker or fuse) to switch off the electric current to the circuit that has the fault.
Are 2-pin plugs earthed?
2-pole means that the device plug is not earthed and it normally has two pins that transmit electricity.
Why is a 3 pin plug better than a 2-pin plug?
When connected with an electric circuit, the current flows from the live to the neutral prongs. 3-pin plugs also limit the amount of power that can flow through the circuit, as compared to a 2-pin plug. Hence 3-pin plugs are safer as compared to 2-pin plugs. Hope this helps.
What is the difference between live neutral and earth pins?
1.Earth pin is bigger (longer) than live and neutral pins. When plug is inserted in socket, cause of longer earth pin first it makes contact to the earth hole prior to live and neutral. Thus earth connection is made before the current carrying contacts of the plug become live.
Why is the earth pin on a 3-pin plug bigger?
In this case, the longer earth pin help to open the shutters for Line and Neutral pins i.e. without longer earth pin, The shutters for Line and Neutral remains closed for better safety. Now we know another reason that’s is why the earth pin on a 3-pin plug is bigger other than Neutral and Live pins.
What happens when the earth pin is inserted in the socket?
Due to the fact that earth pin is directly attached anywhere on the metallic body, if earth pin is inserted in the live hole, current will flow from the live wire of socket to the earth pin of Iron to the metallic part of the iron’s body.
Why do we use the longest pin of the earth connection?
There are some practical reasons for that. When plugging, the longest pin of the earth connection makes the plug comes in contact first with the earth. And on unplugging the phase can disconnect before the earth connected has separated from the plug.