![]() The magnitude of both real and reactive together is called the apparent power, and the PF gives the ratio of real power to apparent power. The power P in watts is equal to the product of the current I in amps, the voltage V in volts, and the power factor PF.ĪC electrical power is composed of a real part expressed in watts and a reactive part expressed in volt-amps. So, 15 amps of current at 120 volts will generate 1,800 watts of power.Ĭonverting amps to watts for a single-phase AC circuit with a power factor requires a slight variation of the formula. It does not store any personal data.For example, let’s calculate the wattage capacity of a 15-amp, 120-volt electrical circuit. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary". ![]() The cookie is used to store the user consent for the cookies in the category "Other. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. I (A) = P (W) / (3 x PF x V L-N (V)), which means that the phase current in amps is computed by dividing the real power in watts by the multiplication of three by the power factor multiplied by the line to neutral voltage in volts. Then the result is multiplied by the line to line voltage RMS in volts. ![]() I (A) = P (W) / (√3 x PF x V L-L (V)), which means that the phase current in amps is computed by dividing the real power in watts by the multiplication of square root of three, time the power factor. What is the phase current in amps if the voltage RMS is 158 Volts?Ĭalculating the AC three phase watts to amps Line to line Voltage If the power consumption is 186 watts and the power factor is 0.4. I (A) = P (W) / (PF x V (V), where the phase current in amps is calculated by dividing the real power in watts by the power factor multiplied by voltage in volts If the power consumption is 214 watts with a voltage supply of 145V, what is the current in amps?Ĭalculating the AC single phase watts to amps I (A) = P (W) / V (V), where the current in amps is computed by dividing the power in watts by the voltage in volts. The current result in amps is displayed below the two switch controls, and you can always perform a variety of calculations after resetting the calculator. Enter the power in watts and the voltage in volts before clicking the ‘Calculate' button which performs the conversion. It can either be Direct Current (DC) or the Alternating Current (AC) single phase/ three phase. You can start by selecting the type of electric current. It is used to convert the electric power in watts (W) to the current in amps (A).
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