Things You'll Need. Calculator. Instructions. Determine the voltage. North American wall outlets operate at 110 to 120 volts. Convert watts to amps using the proper equation: Amps
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divide by volts.
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3000 Watts is equal to 1000 amps.
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Like a couple people have mentioned, you need th know the Voltage. V=W/A or A=W/V or W=AV The three possible formulas. Now I am assuming you are either using 110V or 220V. The 2 most
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