What is a fuse and what are its characteristics?
1 Fuse. Definition of fuse. It is a device used for protecting appliances, cables, and electrical equipments against short circuits and/or overloads. Whenever the current flowing in the circuit exceeds a certain predetermined value, fuse breaks the circuit by melting or fusing fuse element ( a piece of thin metal wire)
What are the characteristic properties of a fuse wire?
Characteristic properties of a fuse wire : (1) It is made up of an alloy of lead and tin. (2) It has high resistivity and low melting point.
What are the two characteristics of a fuse wire?
1 Answer. Characteristic properties of a fuse wire: (i) It is made up of an alloy of lead and tin. (ii) It has high resistivity and low melting point.
Why is fuse wire used?
In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.
Where is fuse wire used?
Fuse wire is protection element. Its purpose: => Isolate in case of overload or short circuit and save costly equipment. => When experimenting a new circuit, a safety for circuit/ supply.
Which wire is used in fuse?
Which material is generally used in a fuse wire? Answer: An alloy of lead and tin as it has a low melting point and a very high resistance.
What fuse to use?
Plugs for appliances rated between about 700 watts and 3000 watts (the maximum rating of a wall socket) should be fitted with a 13-amp fuse (coloured brown). For example: 13A Fuse – Washing machine, dishwasher, microwave, kettle, toaster, iron.
What are 10 amp fuses used for?
A 10 amp fuse will be used to power and protect a circuit that requires a maximum input current of 10 amps. If due to an electrical fault or overload, a current that is significantly over that rating of 10 amps, the fuse will blow – cut off power by destroying itself.
What amp fuse should I use?
If it’s a rewireable type plug and the original fuse size fitted by the manufacturer is not known, the recommended method is to use the 700W rule: For an appliance rated as 700W or less, a 3A fuse should be fitted. For appliances above 700W, a 13A fuse should be fitted.
What are 5 amp fuses used for?
Fuse Wire. Some circuits in older houses might contain Fuse Wire instead of Fuses. If this is the case in your house, you should use 5 amp wire for a lighting circuit, 15 amp for an immersion heater circuit, 30 amp wire for a ring main or cooker circuit (for cookers up to 12 kw).
What would you use a 1 amp fuse for?
1 AMP Ceramic Fuse are suitable for various different uses. These include providing a reliable performance and cost-effective circuit protection. They are ideal for use in plugs to protect cables from melting or catching fire if they are overloaded.
How many watts can a 5 amp fuse take?
If your lighting circuit at home is protected by a typical 5 amp fuse you can multiply this by the voltage to get 1150 Watts.
How many watts can a 10 amp fuse handle?
10 Amps x 120 Volts = 1200 Watts.
What FUSE do I need for 12v?
You need a 6A fuse (4.8 / 0.8 = 5.75). Anything smaller will pop if you exceed 0.8 x the fuse rating.
How does a 13 amp fuse work?
The wire inside a fuse heats up when a current passes through it. If the current is high enough, the wire will melt and cut the power to the appliance. The rated current of the fuse, in this case 13A, is the current that it can safely pass whilst maintaining a low enough temperature not to overheat the plug.
Can you put a 13 amp fuse in a 10 amp plug?
The 13A fuse in place of a 10A fuse wouldn’t directly cause any problem – but then, if there’s a problem with the appliance you‘re using, or if you plug in too many things and the current goes over 10A but under 13A, then under the new fuse the extension lead will keep working whereas the old fuse would have blown.
Can I replace a 3amp fuse with a 13 amp fuse?
No it won’t. The only difference would be the current that flowed under fault conditions. If the OP replaced the cable on his lamp to a size that could handle at least 13A under normal/fault conditions then he could leave that 13A fuse in place until rapture!
What are 7 amp fuses used for?
Appliances with a small heating element (toaster, clothes iron, electric kettle) will also need a high rating fuse of 7 or 13 Amps.
What are 2 amp fuses used for?
Fuses are commonly available in the following sizes: 2 Amp: Suitable for up to 480 watts (black markings) and used in low power devices like radios and shavers. 13 Amp: Suitable for up to 3000 watts (brown markings) and used in high current devices such as kettles, toasters and heaters.
Can you use a 3 amp fuse in a 13amp plug?
The purpose of the BS1363 plug is to protect the cable. A 3A fuse should be fitted for an appliance that is 700W or less. 13A fuse should be fitted for appliances over 700W.
Can you put a 5 amp fuse in a 13amp plug?
The purpose of a fuse (or circuit breaker) is to protect the circuit from damage due to overheating. If your circuit is rated at 13 Amps or higher then you can replace the 5 amp fuse with a 13 amp fuse.