# Tablas y formulas de electricidad

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E = Voltage / I = Amps /W = Watts / PF = Power Factor / Eff = Efficiency / HP = Horsepower
|AC/DC Formulas |
|To Find |Direct Current |AC / 1phase |AC / 1phase |AC 3 phase |
| ||115v or 120v |208,230, or 240v |All Voltages |
|Amps when |HP x 746 |HP x 746 |HP x 746 |HP x 746 |
|Horsepower is Known |E x Eff |E x Eff X PF |E x Eff x PF |1.73 x E x Eff x PF |
|Amps when |kW x 1000 |kW x 1000|kW x 1000 |kW x 1000 |
|Kilowatts is known |E |E x PF |E x PF |1.73 x E x PF |
|Amps when |  |kVA x 1000 |kVA x 1000 |kVA x 1000 |
|kVA is known | |E |E|1.73 x E |
|Kilowatts |I x E |I x E x PF |I x E x PF |I x E x 1.73 PF |
| |1000 |1000 |1000 |1000 |
|Kilovolt-Amps |  |I x E |I x E |I x E x1.73 |
| | |1000 |1000 |1000 |
|Horsepower |I x E x Eff |I x E x Eff x PF |I x E x Eff x PF |I x E x Eff x 1.73 x PF |
|(output) |746 |746 |746 |746|

| |
|Three Phase Values |
|For 208 volts x 1.732, use 360 |
|For 230 volts x 1.732, use 398 |
|For 240 volts x 1.732, use 416 |
|For 440volts x 1.732, use 762 |
|For 460 volts x 1.732, use 797 |
|For 480 Volts x 1.732, use 831 |

E = Voltage / I = Amps /W = Watts / PF = Power Factor / Eff = Efficiency / HP = Horsepower
|AC Efficiency and Power Factor Formulas |
|To Find|Single Phase |Three Phase |
|Efficiency |746 x HP |746 x HP |
| |E x I x PF |E x I x PF x 1.732 |
|Power Factor |Input Watts |Input Watts |
| |V x A |E x I x 1.732 |

| |
|Power - DCCircuits |
|Watts = E xI |
|Amps = W / E |

| |
|Ohm's Law / Power Formulas |
|[pic] |P = watts |
||I = amps |
| |R = ohms |
| |E = Volts |

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|Voltage Drop Formulas...