The following table shows the different values of amperes and wattage for 120V and 230V AC and 12V DC at unity power factor “1”. Electrical Equipment and AppliancesĮquivalent Watts and Amps at 120V AC, 230V AC and 12V DC The phase current I in amps (A) is equal to the power P in watts (W), divided by the power factor PF times the RMS voltage V in volts (V): I (A) P (W) / ( PF × V (V) ) The power factor of resistive impedance load is equal to 1. Typical Power Factor Values for Equipment and Appliancesįor accurate calculation, use the exact value of power factor instead of the typical value by calculation or check the nameplate data rating of the appliance. V L-N = Line to Neutral Voltage in 3-Phase Circuits.V L-L = Line to Line Voltage in 3-Phase Circuits. I = P ÷ (√ 3 x V L-L x Cosθ) Conversion with Line to Neutral Voltage (V L-N) For better experience through mobile phones, use the calculator in landscape position.ĪC Three Phase Power in Watts to Amps Conversion Conversion with Line to Line Voltage (V L-L) Amps calculation with voltage of 120V AC. Note 1: If you are on mobile phones device, click on the three dots “ …” beside the “Advanced Calculator” to select the simple calculator. For DC power supply, amps are equal to watts divided by volts. In Simple Watts to Amps calculator, any two known values among three (P, I and V) can be used to calculate power in watts, current in amperes or voltage in volts. You may read more about the difference between Star ( Y )and Delta ( Δ ) Connections. In Advanced Watts to Amps Calculator, We can calculate the electric current in amperes, milliamperes or kiloamperes from electric power in in watts, milliwatts or kilowatts and RMS voltage in volts for DC circuits, AC, 1-Phase and 3-Phase circuits having the Line to Line voltage ( Delta Connection), Line to Neutral voltage ( Star Connection) and Power Factor (P.F). The following two (basic and advanced) calculators can be used to calculate and convert the electric current in amperes from electric power in watts and voltage in volts. How to Convert Watts (W) to Amperes (A) – Simple and Advanced Calculators
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