WebAMPS - When Horsepower is known HP x 746 Volts x % Eff. x PF HP x 746 1.732 x Volts x % Eff. x PF HP x 746 Volts x % Eff. Electric Motor Horsepower Output (HP) Volts x Amps x % Eff. x PF ... computing alternator amperage: Generator rating: kVA kW @0.8 PF 120 Volts 208 Volts 220 Volts 240 Volts 440 Volts 480 Volts 600 Volts 2400 Volts 3300 Volts ... WebCalculation with line to line voltage. The phase current I in amps (A) is equal to 1000 times the power P in kilowatts (kW), divided by square root of 3 times the power factor PF times the line to line RMS voltage VL-L in volts …
How to determine (not estimate) starting amperage of a motor?
WebMar 13, 2009 · Transposed for Amperage, Amps = HP x 746/Volts x 1.73 x %Eff x pf. Use power factor = .9. Eff = 746 x Output HP/Input watts use 1.5. For estimating a 400 HP … WebMar 5, 2024 · We read: Where the circuit-breaker rating determined by T430.52 is not sufficient for the starting current (inrush current) experienced by the motor, the electrician is allowed to increase the circuit-breaker size even further, up to a maximum of 400% for loads that do not exceed 100 amps. the ozzy osbourne
Electrical Motors - Full Load Amps - Engineering ToolBox
WebJan 17, 2011 · A 120 VAC 2HP single phase motor draws almost 20 amps, a 240 VAC single-phase 2HP motor draws about 10 amps. A 480 VAC 2HP three-phase motor only draws … WebOct 30, 2024 · Let's see how to solve it: Rearrange the formula of hp to amps for the three-phase line-to-line system P = I × √3 × V × PF × η / 746. Apply the values (we can approximate the square root of 3 as 1.73 ), P = 0.5 × 1.73 × 100 × 0.8 × 95% / 746. The resulting power … WebMay 21, 2024 · AMP DRAW BASED ON HORSEPOWER. May 21, 2024. Amp draw measures how much power your machine consumes during operation. Horsepower is a unit of … thep 10