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Welcome to 121 volts to watts.
Here we show you how to convert one hundred and twenty-one volts to watts using the formulas for DC as well as AC circuits.
If you have been wondering how many watts is 121 volts, or if you have been looking for 121v in watts, then you are definitively right here. 🙂
We not only explain you the conversion, but also feature a voltage to watt calculator you will like.
How many Watts is 121 Volts
The answer to the question how many watts is 121 volts depends on the flow of electric charge, either one-directional in direct current (DC), or bidirectional in case of alternating current (AC).
In case of 121 volts in an AC circuit, the power factor PF and number of phases make a difference, in addition to the connection scheme of the wires in case of 3-phase AC.
See the formulas in the next section, and make sure to check out our converter which you can find after the voltage to wattage example calculations.
121 Volts to Watts Conversion
Determine your electric current in amperes (A), then apply the formula below which corresponds to your circuit:
AC, 1 Phase: W = PF × [A] × [121 V]
AC, 3 Phase, Line to Line (L-L): W = √3 × PF × [A] × [121 V]
AC, 3 Phase, Line to Neutral (L-N): W = 3 × PF × [A] × [121 V]
To learn what the power factor, line to line and line to neutral voltage in the context stand for, read our article volts to watts, located in the header menu.
For the example conversions below, we assume a power factor of 0.5 and an electric current of 1.5 amperes. Therefore, for 121v to watts we get:
- Direct current (DC): W = [1.5 A] × [121 V] = 181.5 watts
- Alternating current (AC), 1 Phase: W = 0.5 × [1.5 A] × [121 V] = 90.75 watts
- Alternating current (AC), 3 Phases, L-L: W = √3 × 0.5 × [1.5 A] × [121 V] = 157.18 W
- Alternating current (AC), 3 Phases, L-N: W = 3 × 0.5 × [1.5 A] × [121 V] = 272.25 watts
Remember, these values for 121 volts in watts are example calculations under the assumption PF = 0.5 and I = 1.5 A. For your power factor, amperage and circuit, use our calculator.
Enter 121 in the Volts field, then choose your circuit from the drop-down menu. If requested, insert the PF. Next, in the Amps field, enter your electric current.
If you wish to start over, first hit Reset, then proceed as explained above.
Similar voltage to power conversions on our site include:
121v to Watts Summary
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Thanks for visiting 121v in watts.– Article written by Mark