A fuse is a device that is used in a circuit to prevent overloading or short-circuiting. When a current greater than the fuse's rating travels through it, the fuse wire heats up and melts. The metal inside the fuse tube becomes hot enough to melt, and if it contacts any other metal objects they too will be melted.
The most common reason for melting a fuse is excessive current flow. Fuses are designed to break at a safe distance from any equipment that might be damaged by an overload. If a load more than the fuse's capacity is placed on it then it will soon burn out and have to be replaced.
In addition, fuses can also be caused to "melt" by exposure to heat or light. This usually happens when you try to repair a blown fuse with a soldering iron or similar tool that is being used outside its intended purpose. The metal parts of the fuse will get very hot and may start to melt if they contact any other metal object.
Finally, fuses can also be damaged by water or electricity. If you drop a fused lamp bulb, for example, you should replace it immediately because even small amounts of water can cause the glass to shatter. Electricity flowing into dead parts of a circuit can cause those areas to heat up and melt components.
An electrical fuse is a device that sacrifices itself to safeguard an electrical circuit from overcurrent. Electrical resistance is low in conducting wires. If the current exceeds the permissible limit, the wire in the fuse will heat and melt, blocking current passage across the circuit. The fuse may continue to burn if enough power is applied; however, after burning for a while it will be cool to the touch, indicating that it has released all its energy as thermal radiation.
The term "fuse" comes from the French word fusée, which means rocket. The original electric fuse was invented by Michael Faraday in 1815. He called it an "electric bell" because of its characteristic sound when burned out. Today's plastic fuse boxes include several different types of fuses: auto-reset, snap, and ground. Auto-reset fuses automatically reset themselves after they have blown. This is useful for preventing false alarms. Snap fuses are only suitable for short circuits because they cannot carry current after they have blown. Grounded fuses prevent current from entering or leaving a panel through someone who might be standing on one side of a wall socket but touching a metal object on the other side (such as a light switch).
The most common type of fuse is the plastic fuse box staple. These come in two main varieties: single-throw and multiple-throw. Single-throw fuses are controlled by a single button or lever.
Many electrical equipment need the usage of fuses as a kind of protection. They just monitor the current absorbed by the circuit/load, and if a hazardous current flows through the circuit, the fuse will explode, protecting the load/circuit from being destroyed by that excessive current. Fuses can be split into two main categories based on their construction: thermal fuses and electronic fuses.
Thermal fuses are designed so that they will break the circuit when they reach an elevated temperature. This prevents any unnecessary heat from flowing into the wiring itself, which would probably cause it to burn down before the rest of the system fails. Thermal fuses usually contain some sort of material that expands or melts at a specified temperature, such as wax or mercury. When this material reaches its melting point, the fuse is gone, ending the circuit flow and preventing further damage to your property and person.
Electronic fuses are similar to thermal fuses but instead of breaking the circuit when they reach a certain temperature, they change something about the way the circuit behaves. For example, an electronic fuse could be designed so that it opens a circuit contact permanently after one time use. These tend to cost more than their thermal counterparts but they are generally considered worth it in applications where redundancy is needed in order to prevent unnecessary damage to your property and person.
Fuses should never be used as an alternative to electrical outlets.
Fuses are sacrificial devices that are used to safeguard more expensive electrical components from the destructive effects of overcurrent. When too much current travels through the fuse's low resistance element, the element melts and the circuit is broken. Fuses are indispensable in any situation where there is a risk of damage due to an overload condition.
The most common type of fuse is the ceramic fuse. It consists of two pieces of ceramic material with a thin wire running between them. If enough voltage is applied to this wire it will melt and break the connection between the two pieces of ceramic, thus opening the circuit. Ceramic fuses are cheap and very effective but they cannot be reused once they have melted. They are therefore not suitable for use with power equipment such as drills or vacuum cleaners where leakage could cause damage to other parts of the machine.
The second type of fuse is the carbon arc fuse. It works on the same principle as a ceramic fuse but uses a thin strip of carbon material instead of a wire. These can be reused many times before they need replacing. However, they are also very expensive compared to ceramics and require careful handling to prevent burning themselves up.
The third type of fuse is the plastic fuse.
In any electrical system, a fuse (or fuses) is required (AC or DC). These devices respond to the amount of heat created by electricity travelling through wires and/or components. They are used to shield cables and components from the intense heat generated by an electrical overload or short circuit. Without a fuse, such as in a home with older wiring, there would be no way to shut off the power before it caused damage to your appliances and electronics. Fuses can be replaced by an amateur repair person if they fail to perform their function properly. However, for larger systems that use multiple fuses, this should not be done without the help of a professional electrician.
The importance of the fuse lies in its ability to prevent overloading and overheating of wires and components. This can cause fire hazards as well as damage otherwise harmless items such as lights or TV sets. The fuse is also important because it allows homeowners to shut off power in case of an emergency. If a household loses electricity because of an underground cable break, people can safely turn off their power without worrying about burning themselves out of their own bedrooms. When you have live electricity running through your house, even if you don't know it, it can be dangerous. By using fuses, you allow yourself time to react and take measures to protect yourself and your family.
Fuses come in two types: magnetic and thermal.