If a heater of 1000 watt is connected ti 220V line. Which type of fuse should be used?

To determine the appropriate fuse size for a 1000 watt heater connected to a 220V line, you can use the formula:

Fuse size (in amps) = Power (in watts) / Voltage (in volts)

Fuse size = 1000 watts / 220 volts
Fuse size = 4.55 amps

Therefore, a fuse rated for at least 4.55 amps should be used to protect the heater. It is recommended to use a fuse slightly higher than the calculated value to ensure proper protection. In this case, a 5 amp fuse would be suitable for the 1000 watt heater connected to a 220V line.

To determine the appropriate fuse rating for the heater, we need to calculate the current it draws:

Current (I) = Power (P) / Voltage (V)
Current = 1000 watts / 220 volts
Current = 4.55 amperes

Typically, a fuse rating should be slightly higher than the maximum current the device is expected to draw. This is to provide a margin of safety and prevent the fuse from blowing unnecessarily.

For a current of 4.55 amperes, a fuse rating of 5 amperes would be appropriate.