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The formula you are looking for is I = W/E.

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14y ago
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5mo ago

To calculate the amperage, you would use the formula: Amps = Watts/Volts. In this case, it would be 400W / 220V = approximately 1.82 Amps.

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14y ago

Depends completely on the input voltage as watts is simply amps X volts. Assuming household of 120V or 240V would give an amperage of 3.33 A or 1.66A respectively

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12y ago

P= i * e

400w= i * 220v

i=1.8a

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14y ago

It will take 1.82 Amperes approximately.

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Q: How many amps does a 400watt light draw from 220v?
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