Because of the high power usage. Often when alot of power is concentrated in one place a fuse could blow. Also sometimes there are dodgy PowerPoints and connections and can short out the whole house.
It is dangerous to take a bath with a blow dryer because mixing water with electricity can lead to electrocution. Water is a good conductor of electricity, and using electrical devices near water increases the risk of electric shock. It is important to always keep electrical devices away from water to prevent accidents.
Fuses are overcurrent protection devices. If voltages get extreme they blow to save other components. So yes in a way they detect electrical energy.
When you are presented your birthday cake, make a wish and blow out the candles. An electrical surge will often cause an overload and blow out a fuse.
A car fuse can blow for several reasons, primarily due to an electrical overload, which occurs when too much current flows through the circuit. This can happen if there is a short circuit, damaged wiring, or a malfunctioning component. Additionally, if aftermarket electrical devices are added without proper ratings or installation, they can also lead to blown fuses. Essentially, fuses act as safety devices to protect the vehicle's electrical system from damage.
If you don't know Ohms law, or how a transformer alters voltage and current in most devices, you probably shouldn't be trying to modify an electrical circuit. Use whatever the manufacturer recommends. Using a smaller fuse may or may not work, but won't hurt anything (the fuse may blow more often). Using a larger fuse than recommended will risk damaging the device, or possibly whoever is using it.
A fuse can blow when the electrical current flowing through it exceeds its rated capacity, causing the wire inside the fuse to heat up and melt. This typically occurs due to a short circuit, overload, or a fault in the electrical system. By breaking the circuit, the blown fuse helps prevent damage to electrical devices and reduces the risk of fire. Replacing the fuse is necessary to restore the circuit's functionality.
Because the fuse is designed to limit the current in the circuit. Using too many appliances draws excessive current from the mains, causing the wire in the fuse to melt - and thus it cuts the circuit. If it didn't, the excessive current would melt the house-wiring - possibly starting a fire !
An overload condition is demanding more current than can be supplied. This could trip a breaker, blow a fuse or possibly destroy a device that is drawing too much current.
The load exceeds the limit of the breaker or fuse. For example a 20 amp breaker on a 120 volt circuit will handle 2400 watts. Exceed that wattage and the breaker will trip or the fuse will blow.
if you touch an electrical appliance with wet hands while its on it can blow
A blow-dryer typically uses electrical energy to power its motor and heating element.
It seems you have an electrical short somewhere.