How To Determine Amperage Of Home. This calculator also complies with the 2020 NEC requirements. Determine the phase current I in amps A by dividing the power P in watts W by 3 times the power factor PF times the line to neutral RMS voltage VL-N in volts V.
Because a homes main service is 240 volts the math looks like this. Write down the number printed on each of the branch circuit breakers. To determine Amps consumed by a 25watt 12V light bulb for example use the equation AWV or 251221Amps.
This amount of ampacity is really too small for a residence unless gas.
First find the breaker that correlates to the electrical device you are using This is normally either a 15-amp or 20-amp circuit. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators. An ammeter is a measuring instrument used to measure the current in a circuit. If the two slots are perpendicular.
