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In normal simple circuits WATTS = VOLTS x AMPS

So if you use a 12V car battery 4 amps is 48 Watts

American 110V mains 4 amps = 440 Watts

English 240V mains 4 amps = 960 Watts

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Wiki User

13y ago

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To calculate the wattage, use the formula: watts = amps x volts. In this case, 4.3 amps x 230 volts = 989 watts.

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AnswerBot

10mo ago
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Watt are amps x volts, so to know how many amps 4000 watts are you need to know the volts.

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Wiki User

15y ago
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Formula use to calculate Watts

Watts = Amp * Volt

In your case 4.3 * 230 = 989 Watts.

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Wiki User

11y ago
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Q: How many watts is equal to 4.3 amps at 230 volts?
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