# How much electricity does a 75 horse electric motor group?

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## Top best answers to the question Â«How much electricity does a 75 horse electric motor groupÂ»

#### How do you calculate the electric horsepower of a motor?

**Electric**Horsepower Calculator**How**do you calculate electrical horsepower? To find the electric horsepower of**a motor**, use the equation: Horsepower = (Volts x Amps) / 745.7

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To find the electric horsepower of a motor, use the equation: Horsepower = (Volts x Amps) / 745.7. (does not take efficiency into consideration) Example: The electric horsepower of a motor with 120 volts. and 10 amps is: HP = (120 x 10) / 745.7. Calculated out this gives an electric horsepower of 1.6092. (rounded to the nearest 10,000th)

Note that most electric motors are designed to run at 50% to 100% of rated load and that maximum efficiency usually is near 75% of rated load. For a 1 horsepower (hp) motor the load should typically be in the range 1/2 to 1 hp with maximum efficiency at 3/4 hp.

1 hp (E) = 746 W. So the power conversion of horsepower to watts is given by:

Electric motor horsepower & circuit ampacity & wire sizes vs. motor horsepower. This article explains how to calculate the horsepower of an electric motor if we know its wattage or current draw in amps. The article gives a simple formulat to convert electrical amps to horsepower and explains what data are actually needed to make an accurate horsepower calculation or rating.

ELECTRIC MOTOR WATTAGE GUIDE: Electrical motors present special electrical startup considerations. They can require up to three times their rated running wattage to start. Motor nameplates generally will show starting watts, some as high as nine times the running wattage.

Selection Tables â€“ Three Phase Motors. AC Motors â€“ full load current tables (1450rpm approx.) (provided as a guide to the selection of suitable MEM control gear). The tables are based on motors of approximately 1450rpm of average efficiency and power factor. Motors of higher speed usually take a lower current than that shown in the table; while ...