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If a fault occurs in a device, then it can cause high, dangerous currents. For instance, if the live of a household appliance comes into contact with the ground, then the resulting current could heat up wires and cause them to burn. Worse, if this connection to ground is made through the body then it can cause burns or even fibrillation.
If a high enough current must pass through a fuse, then the inside of the fuse melts and cuts off the current. The fuse must then be replaced. If a high enough current passes through a meter connected to a breaker, then the breaker is "tripped". This again cuts off the current, but the circuit can be re-made without replacing parts.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoIt would depend on the application, for instance fuses are typically used for the various electrical circuits in a vehicle. For household or industrial electricity services, fuses are commonly used nowadays for the electricity supply authority's main fuse where fluctuation in voltage is common, and for some electrical equipment, for example to protect motor circuits.
The use of fuses is standard in the electrical plugs used in the UK and other countries which use a 230 volt 50 Hz service to deliver power using Type G plugs and socket outlets.
Low-cost 1 amp, 3 amp, 5 amp and 13 amp fuses are commonly available and each appliance has to be fitted with the correct size fuse to protect it, according to the current it normally draws.
For more information see the answers to the Related Questions shown below.
Wiki User
∙ 14y agoFuses or circuit breakers are added to circuits to limit the current. This allows the current to stay within the amperage rating of the conductors, that takes the supply voltage to the load.
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What fuses and circuit breakers provide protection in the event of?
Short circuit fault.
What devices are used to deliberately create an open circuit when the current exceeds a specific value?
fuses or circuit breakers
What do circuit breakers and fuses have in common?
Both fuses and circuit breakers cut off a circuit from its power supply when the total current through the circuit exceeds the current rating of the fuse or circuit breaker, usually due to a short to ground or overloading of the circuit. Both use materials that respond to heat.
How do you work air circuit breaker with air?
circuit breakers are switches that open quickly usually opening with a fault condition air circuit breakers need a long path to quench the arc oil filled circuit breakers quench arcs much more effectively and in a smaller space vacuum breakers have no media for an arc to propagate and are far smaller fuses generally are filled with silica sand to quench the arc and higher currents make the arc path much longer typical AIC fuses 200,000A air breakers 15,000A oil breakers 50,000A vacuum breakers 100,000A fuses work once and work correctly and dont fail or weld closed they are inexpensive and safe breakers can work tens of times breakers need rework and recalibration whenever they are reset breakers have mechanical moving parts tempered springs and require periodic maintenance and testing Breakers can weld shut with a short
What are two methods used in most circuit breakers to protect electrical circuits?
There is a heated bimetallic strip that provides a time delay small overload protection. When its contact makes, it energizes a coil to trip the breaker. Some breakers are mechanical, though. There is a coil that trips the breaker instantly on large overload.
What are the circuitrotectors?
Circuit protectors are fuses and circuit breakers.
Which of these are alternatives to fuses?
circuit breakers
Does a 1977 Harley fl have fuses?
No fuses, but it does have circuit breakers.
Circuit breakers are used for the same purposes as?
fuses
Are easier to use than?
circuit breakers ...fuses
What fuses and circuit breakers provide protection in the event of?
Short circuit fault.
How do fuses or circuit breakers help protect homes?
During an electrical fault, be it a short circuit or circuit overload, fuses and breakers are designed to open at a specific amperage. This opening of either device eliminates a fire hazard before it gets a chance to start. This is how fuses and breakers protect the home.
When did circuit breakers replace fuses in homes?
1950's
Is a circuit breaker an alternative fuses?
Circuit breakers do the same thing as fuses. They interrupt current flow when a certain preset point is reached. The difference between circuit breakers and fuses are that circuit breakers are resettable and reusable, whereas fuses are one time devices that must be replaced after they blow.
What are the main protective devices in a power system?
Circuit Breakers or fuses.
What protects circuits and their components?
Fuses, fuseable links and circuit breakers.
What protects against circuit failure?
Two examples of how to protect against circuit failure are fuses and circuit breakers.
