An electric fuse is a safety device used to regulate current in an electric circuit that melts and breaks the circuit if there is an excessive flow of current through the circuit. The term "electric" here refers to the fact that heat is the means by which the circuit is broken; a chemical fuse would burn instead.
Excessive current can cause damage to your equipment fast enough to be dangerous. For example, a motor running at full speed could suffer mechanical failure due to heat stress before its driver circuit detects anything amiss. An electric fuse prevents such problems from happening by melting, or "burning out," the fuse element if too much current flows through it.
The typical electric fuse consists of two parts: A glass or ceramic tube with a thin wire wound around it several times. The end of this wire forms a small blob of metal called a "spark plug." When there is an excessive amount of current flowing through the fuse, the spark plug heats up and burns away the surrounding material, opening the circuit and allowing more current to flow.
Electric fuses are available in various sizes for different current loads. For example, a 200-400 volt fuse will break the circuit when it receives 400 volts from an external source.
An electric fuse is referred to be a safety device because it may safeguard an electric circuit from excessive electric current. The fuse itself is not dangerous, but it can cause damage if it sparks and burns.
Fuses are available in many sizes and styles. The type of fuse you use depends on how much current it will have to carry at one time. For example, a household fuse has the ability to carry up to 15 amps of continuous current. A power fuse carries much more current and is used in applications where more force is needed to blow it. For example, a power fuse for an air conditioner might be able to carry 20 amperes of current. When any circuit requires more current than the capacity of a single fuse, several fuses in series are required.
The term "safety fuse" is commonly used to describe a fuse that is designed to break away from its housing before blowing so that it does not hit anyone or anything with flying debris. Safety fuses should also contain an indicator light or buzzer to alert people that the fuse needs to be replaced before it blows.
Electric fuses are available in two main types: magnetic and thermal. Magnetic fuses use a magnet to open them when too much current flows through them.
A fuse is an electrical safety device that protects an electrical circuit against overcurrent. Its main component is a galvanized wire with an antimony tin alloy that explodes (melts) when too much current travels through it, causing the current to be interrupted. The word "fuse" comes from the French word for spark: filaire. This refers to the way in which the wire produces a flame when it melts.
When a fuse blows, it's usually because one of two things has happened: either the battery connection to the fork lift truck has been removed or the power source has gone out. If you drive a fork lift truck and don't know how to test its fuses, now is a good time to get informed. Fuses are easy to replace and can protect your equipment from damage caused by excessive currents.
The first thing you should do if a fuse blows is not to approach the vehicle powering up. Instead, call for help from someone who knows about motor vehicles. If possible, have someone watch where you are driving as you repair the problem.
After you have called for help, check whether any of the circuits powered by the dead fuse are still working by using a multimeter. You should only need to check one circuit at a time unless you are sure that more than one fuse has blown.
A fuse's function An electric fuse serves as a physical barrier between an electric circuit and the human body. It protects the electric gadget from harm by limiting the passage of excess current. It avoids current overloads. Fuses are available in various sizes for different applications.
How does a fuse work? A fuse is a mechanical or electrical component which interrupts an electric circuit when too much current passes through it. This prevents damage to the circuitry itself. The fuse may then need to be replaced before it causes greater damage to the circuit. The two main types of fuse are thermal and magnetic. Thermal fuses burn out when exposed to high temperatures for too long. Magnetic fuses consist of a thin wire with a large number of small magnets attached to it. These attract each other across the gap of a printed circuit board causing them to break contact, thus opening the circuit.
Why do we need fuses in our circuits? Fuses protect our equipment from damage caused by excessive currents. This can happen if a lot of lights are on near a plug point or if one light goes off while another remains illuminated. In this case, the remaining light would be able to cause damage to the wiring inside the fixture by exposing it to heat. A fuse also ensures that electricity reaches all parts of the circuit, even if a section of it has been damaged.