An electric geyser has the rating 2000w-220 v marked on it. what should be the minimum current rating (in whole number) of the fuse – wire to be used?
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Given,
w=2000
v=220
we know,
w=vi
i.e., i=w/v=2000/220=9.09A
current drawn is 9.09A
Hence the fuse wire should be at 10A for safe use with the geyser.
A fuse is nothing more than a short length of wire designed to melt and separate in the event of excessive current. Fuses are always connected in series with the component(s) to be protected from overcurrent, so that when the fuse blows (opens) it will open the entire circuit and stop current through the component(s).
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