14,964.919 W is the example result. Read it using the units and relationship stated below.
Three Phase Power uses line voltage (v), current (a), power factor.
Distinguishing electrical arithmetic from equipment selection
For three phase power, the relationship is Result = √(3) × [Line voltage (V)] × [Current (A)] × [Power factor]. The amount depends on the supplied line voltage (v), current (a), rather than a live market price or a value imported from another record. Power, energy, voltage and current describe different quantities. Watts represent a rate; watt-hours represent energy over time. Battery and inverter losses can reduce usable runtime even when the rated capacity is unchanged.
What the model includes
Result = √(3) × [Line voltage (V)] × [Current (A)] × [Power factor] Read unit labels before comparing results. Motor estimates depend on phase, efficiency and power factor; energy budgets depend on duration and duty cycle. Nameplate values and measured consumption may differ under real loads. Treat the output as the stated estimate. It does not select a code-compliant conductor, protective device or complete installation. Equipment specifications and applicable requirements remain part of the design decision.
Example with the supplied inputs
Line voltage (V): 480; Current (A): 20; Power factor: 0.9. Result: 14,964.919 W. The values are illustrative.
Compare one changed input
Line voltage (V) changes from 480 to 528. The result becomes 16,461.4109 W. All other inputs remain fixed.
Calculation rule
Result = √(3) × [Line voltage (V)] × [Current (A)] × [Power factor]
Inputs and output
| Input | Example value | Entry convention |
|---|---|---|
| Line voltage (V) | 480 | Use the source quantity represented by line voltage (v). Keep the counted population fixed and avoid mixing a unit value with a period total. |
| Current (A) | 20 | Use the source quantity represented by current (a). Keep the counted population fixed and avoid mixing a unit value with a period total. |
| Power factor | 0.9 | Enter power factor as a fraction greater than 0 and at most 1 (0.9 means 90%). It is not an efficiency percentage. |
Output: 14,964.919 W is the example result. Read it using the units and relationship stated below. Unit: W.
How to use the page
Collect the inputs
Gather Line voltage (V), Current (A), Power factor. Use one period and the units shown in the form.
Run the calculation
Enter the values and select the action. The calculation rule above explains how the inputs produce the result.
Compare a scenario
Change Line voltage (V) on its own, keeping the other inputs fixed. Read both results before changing another assumption.
Worked example
With the example inputs listed above, the result is 14,964.919 W.
Change Line voltage (V) from 480 to 528 while keeping every other value fixed. The result becomes 16,461.4109 W. This comparison isolates that input; it does not forecast how other variables will respond.
Check the stated formula, units and limits before using the result in a decision.
Keep the displayed formula, input units and model scope with the result. Corrections or questions can be sent through the request section on this page.
Content updated: October 11, 2026