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The appliance will not work because the fuse will blow every time.
The fuse rating should be 5 amps
If you are referring to the standard plug used in the UK, then the maximum rating fuse is 13 A, which can supply a load of approximately 3 kW. But the fuse fitted must match the power-rating of the load, so lower-rated fuses are available; for example, a 3-A fuse can supply up to about 700 W.
All UK-style 13-A plugs are fitted with a fuse for the purpose of overcurrent protection. The fuse rating must be appropriate for the load supplied by the plug, up to a maximum of 13 A.
No. If the voltage rating of a fuse is too low for the circuit in which it is fitted then, when the fuse operates (i.e. its link melts), the circuit voltage might maintain the resulting arc within the fuse, and it will fail to protect that circuit.
The appliance will not work because the fuse will blow every time.
The fuse rating should be 5 amps
A fuse is given a various rating (strength). For instance, a home appliance (washing machine, etc) would usually have a fuse with a 13 amp rating. While a low powered lamp would only merit a 2 or 5 amp fuse rating. It is important to use a fuse of the correct rating in amps for each electrical appliance.
If you are referring to the standard plug used in the UK, then the maximum rating fuse is 13 A, which can supply a load of approximately 3 kW. But the fuse fitted must match the power-rating of the load, so lower-rated fuses are available; for example, a 3-A fuse can supply up to about 700 W.
All UK-style 13-A plugs are fitted with a fuse for the purpose of overcurrent protection. The fuse rating must be appropriate for the load supplied by the plug, up to a maximum of 13 A.
No. If the voltage rating of a fuse is too low for the circuit in which it is fitted then, when the fuse operates (i.e. its link melts), the circuit voltage might maintain the resulting arc within the fuse, and it will fail to protect that circuit.
To ensure you are using the correct rating of fuse simply divide the total wattage of your appliance by 250 and round up to the closest value. For example, a 1500 watt hair dryer should be fitted with a fuse equal to 1500 divided by 250 = 7amp
The fuse wire is rated for a specific amount of amperage. If the amperage exceeds that rating, the fuse wire will quickly melt. The current flow in the circuit is interrupted, thereby protecting the appliance from an overload condition.
A fuse link will melt and interrupt the flow of current to the appliance before it can get high enough to damage the appliance or wiring.
Yes you can do that as long as it will fit in the fuseholder. It is acceptable to replace a lower Voltage Rated fuse with a higher but NEVER replace a higher with a lower. There are several things to consider when replacing a fuse: 1) The minimum voltage rating of the fuse is equal to or higher than the voltage of the circuit you are placing it in 2) The Amperage rating of the fuse does not exceed the capacity of the circuit you are trying to protect. Always replace a fuse with one that has the same amperage rating. 3) The interrupting rating of the fuse is sufficent for the capacity of the circuit supplying the fuse. If replacing a fuse always use one with an interrupting capacity equal to or greater than the fuse you are replacing.
If I understood your question correctly, 'If you know the power rating of an appliance and the voltage of the line it is attached to, can you calculate the current used by the appliance?' You are looking for this equation: I = Current (Amps) P = Power Rating (Watts) V = Voltage (Volts) I = P/V This equation is useful when calculating the fuse rating for an appliance. For example, and appliance rated at 2400 watts, supplied with 240 volts has a 10 amp maximum. I = 2400/240 however, when it comes to paying for electricity, the energy is measured in units, which can be found using the equation: P = Power (kW) t = Time (Hours) Energy Used (Units) = Pt for example, an appliance rated at 2 kW used for 3 hours, uses 6 units of energy. Units = 2*3
It is ok to use a fuse with a higher amperage rating and not ok to use a fuse with a smaller amperage rating why?