RO: Amp EN: Amp calculations
Formula: Amps = watts ÷ volts. Tip: When the no-nonsense electrician asks: How many amps will you need at 120 volts? just divide the maximum watts you expect to use by 100 (it has a built-in safety factor and you won t have to hunt for a pencil). Need 3,000 watts? 3,000 ÷ 100 = 30 amps. Remember, if you don t know watts what, you ll blow it - with the electrician.
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