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What is the equation for wattage?

Updated: 4/28/2022
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9y ago

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Wattage = voltage times amperage. That's for DC. For AC there is a power factor PF = cos phi you have do multiply with.

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The above answer suggests that power ('wattage') is an electrical unit, which it is not. In fact, power is defined as the rate of doing work, so the basic equation is work divided by time.

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9y ago
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Q: What is the equation for wattage?
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The equation is quite simple. Multiply the number of lights on the system by their wattage to determine the system wattage.


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The volts will depend on what country you live in. The wattage can be calculated by the following equation. W = Amps x Volts. As you can see you need the value of the sharpener's amperage to obtain the wattage rating..


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How do you find the actual wattage of an electrial component?

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How may watt does a load of 3570 watt draw from an UPS of 2010 watt?

If the load wattage is 3570 watts then that is what the load wattage draws. Now by using the expression "draws" maybe you meant to say amps. If it is amperage that you are looking for then the answer can not be given without knowing what the voltage of the system the UPS is tied into.The equation to use is A = Watts/Volts.If a UPS nameplate output rating is 2010 watts then that is the maximum that the UPS is designed for by the manufacturer. Applying a greater load that what the UPS is rated for will void the warranty. Match the load wattage to the UPS's output when calculating what size is needed to operate correctly. This can be done by adding up all of the device wattages that will be connected to it. If the device does not have a wattage shown use the equation above to find the wattage.