Question

how to find fuse rating?

Answer 1

this is important Notes the power of the appliance – usually in the appliance manual,Note the voltage (240 volts in the UK).Use the next highest fuse rating after the calculation. Say the calculated fuse rating is 2.2679 amps, use a 3 amp fuse.

Answer 2

Using the guideline that the fuse is rated at 125% of the normal operating current.

 

Power (Watts) = Current (Amps) x Voltage (Volts)

 

Therefore:

 

Current = Power/Voltage

 

Therefore:

 

Fuse rating = (Power/Voltage) x 125%

OR, put another way:

 

Fuse rating = (Power/Voltage) x 1.25



Hope that helps u!!