How many amps is 1,200 watts at 240 volts?

5 amps. Doubling the voltage halves the current for the same power, which is why big loads (dryers, ranges, EV chargers) run on 240 V. A dedicated 240 V circuit for this load starts at a 15 A breaker.

What's the formula for converting watts to amps?

For DC and resistive AC loads: amps = watts ÷ volts. For AC loads with a power factor (motors, magnetic ballasts): amps = watts ÷ (volts × PF). A PF of 0.8 makes the same 1,200 W draw 25% more current.

Is 1,200 watts a lot?

For scale: a window air conditioner, a pool pump, a toaster draw about 1,200 W. A standard 120 V household circuit tops out at 1,800 W (15 A) or 2,400 W (20 A).

1,200 Watts to Amps

1,200 watts is 10 amps at 120 volts and 5 amps at 240 volts (amps = watts ÷ volts, at unity power factor). Every common voltage below.

1,200 Watts to Amps conversion table

Voltage	Amps (PF 1.0)	Amps (PF 0.8)
12 V DC	100 A	–
24 V DC	50 A	–
48 V DC	25 A	–
120 V AC	10 A	12.5 A
208 V AC	5.77 A	7.21 A
240 V AC	5 A	6.25 A
277 V AC	4.33 A	5.42 A
480 V AC	2.5 A	3.13 A

PF = power factor. Resistive loads (heaters, incandescent lights) are PF 1.0; motors and compressors typically run PF 0.8-0.9. For a different value, use the interactive converter.

What draws about 1,200 watts?

Measure it instead of converting it

A load this size usually plugs into a 120 V outlet. A plug-in power meter between the outlet and the cord shows its real amps and watts with nothing opened up. A clamp meter reads one conductor at a time, so it is the tool for hardwired and 240 V circuits.

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Plug-in power meter