Question

an electric geyser has rating 2000w 220v on it what is the minimum current rating of fuse wire that may be required for use with geyser

Answer 1

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Given:
Power=2000w
Voltage=220 v
I=?
P= v*I
I=P/v
=2000/220
=9.09 amp
Fuse rating should be greater than flowing current .
Hence select a fuse of 10 amp

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Answer 2

Answer:

Explanation:

Give 2000 watt , 220 v , amp = ?

Formula - watt = v×i×cosφ

2000=220×i×1

As per geyser is resistive load cosφ is unity = 1

2000÷220= I

Amp = 9.1

10 Amps MCB suitable...