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A fuse is an overcurrent protection device. So the fuse fitted inside a plug is designed to protect the circuit which it supplies. British plugs are rated at 13 A, but must be fitted with an appropriately-rated fuse, based on the load supplied from that socket.
Wiki User
∙ 11y ago
Wiki User
∙ 10y agoAnswer for UK, Europe and countries running a 50 Hz supply service.
The neutral provides the return path for the supply current that comes in on the live wire. So the live and neutral are the two wires that connect the power to the load.
The neutral is usually connected to ground at the supply transformer, which might be at the end of the street. However it is possible for dangerous voltage pulses to appear on the neutral wire under fault conditions.
Also in a 3-pin plug is the earth wire that connects the exterior surfaces of all appliances so that they are all at the same potential and cannot give electric shocks. That is also connected to ground and to the gas and water pipes at each property.
Wiki User
∙ 10y agoIn the UK plugs are individually fused, and they are usually sold fitted with a 13 amp fuse.
Smaller fuses can be used for low-power equipment, and common fuse sizes in use are 3A and 5A. Fuses can also be bought rated at 1A and 7A.
Typical fuses would be 3A for lights and radios, 5A for TVs, computers and irons, and 13A for refrigerators, convectors, water heaters, driers and machines like vacuum cleaners.
These would all be plugged in to a 30-amp ring circuit using 2.5 mm2 fixed wiring.
Wiki User
∙ 12y agoElectricity is used to move Energy from one place to another and it must flow in a circle (called a Circuit). A Generator takes electricity from the Earth (literally the ground), adds Energy to it and sends it 'out' through the Hot wire. The Electricity then goes through some device, gives up the Energy the Generator put into it and flows back to the Generator through the Neutral wire to start the cycle again. It is called Neutral because it has no voltage (Energy) left in it, it is just an easy and safe way for the 'used' electricity to get back to the Generator that 'made' it in the first place. In the US the Neutral wire is often called 'return'.
Neutral is usually connected to 'ground' at a Distribution Panel where the main power enters a building. This connection is not technically necessary for Electricity to work, it is just safer if Neutral is regularly connected to a good solid ground to ensure it flows where it should and not through people.
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What are the names of the three wires in a plug?
Live Wire = usually brown, if not then its grey or black. Neutral Wire = Blue Earth Wire = green and yellow striped
When does a motor not need a neutral wire?
If the motor is operated from a three phase three wire distribution system the motor will not need a neutral wire.
What is the blue wire for in a three pin plug?
In the UK Brown is the live, blue is the neutral and green/yellow is the earth. The live and neutral are the two wires that normally carry the current.
What is the function of the live wire in a 3 pin plug?
A 'live' or 'hot' wire is a wire that is connected to a power source. This wire supplies voltage to a load ( light bulb, hair dryer, etc.). When the load is also connected a neutral or another live wire this becomes a path for the flow of current (amps) known as a circuit.
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.
What color is the neutral in a plug?
In the UK the neutral wire is 'blue'.
What are the names of the three wires in a plug?
Live Wire = usually brown, if not then its grey or black. Neutral Wire = Blue Earth Wire = green and yellow striped
Which wire is colourd blue in a plug?
neutral
How do I rewire an ungrounded plug?
If there is no ground wire connect the ground wire to the neutral wire.
Where is the neutral safety switch on a 1992 dodge Dakota truck?
The neutral safety switch is on the side of the transmission. It screws into the side and has a small three wire plug.
What are the three wires in a plug called?
The green and yellow is the earth wire The brown is the live wire The blue is the neutral wire A poem to help is: The brown live cow drinks from the blue neutral water and eats the green grass from earth
When does a motor not need a neutral wire?
If the motor is operated from a three phase three wire distribution system the motor will not need a neutral wire.
How do you attach a three prong plug wire with a green white and black wire to a shop light with a black wire and white wire?
The green wire is for ground. You can attach that to any metal part of the frame. The red is the active and coincides with the lefthand prong into the plug and the black in this case should be the Neutral and ciocides with the right prong into the plug as seen standing behind the plug.
What is the blue wire for in a three pin plug?
In the UK Brown is the live, blue is the neutral and green/yellow is the earth. The live and neutral are the two wires that normally carry the current.
What is the function of the live wire in a 3 pin plug?
A 'live' or 'hot' wire is a wire that is connected to a power source. This wire supplies voltage to a load ( light bulb, hair dryer, etc.). When the load is also connected a neutral or another live wire this becomes a path for the flow of current (amps) known as a circuit.
Is orange the neutral wire in a plug?
No, the colour white is used to identify the neutral in electrical distribution systems.
How do you wire a Nema L5-30 plug?
An L5-30P is a two pole three wire grounding 30 amp, 125 volt plug . The neutral wire is connected to the W terminal, the ground wire to the G terminal and the hot wire to the only terminal that is left. The small blade/slot is neutral (white), the larger blade/slot is hot (black) and the notched blade/slot is ground (green).
