Side note: "3.7HP" is one of those marketing BS tricks played by people selling consumer goods, I wouldn't get excited about that. Look for the legally required electrical specs, it will either be actual Watts (kW) or it might just be an "MCA" (Minimum Circuit Amps) possibly followed by an MOCP (Maximum Over Current Protection). The MCA is a more real number. A 3.7HP 230V single phase motor would in theory require a circuit based on 5HP, which means a 40A circuit at minimum. They wouldn't be able to sell it. More likely it is going to tell you it can be connected with a 20A circuit. That means is probably a 2HP motor.
How they get away with that is a study in "spin doctoring" (aka "alternative facts").
"HP" can be defined as a MOMENTARY value by simply using the word "develops" somewhere in the description. That means if they have a 2HP motor, the motor nameplate would have to be more truthful in order to be UL listed. 2HP means it will provide 6ft-lbs of torque at 1750RPM. But MOMENTARILY, that same motor can provide 200% of that torque value, if only for a few seconds. In the real world we call that Break Down Torque, which is a maximum the motor can deliver, but not without also pulling 200% current, which it CANNOT do indefinitely. That is a superfluous detail for the marketing dept. however. That 200%, or 12 ft-lbs of torque, would require the motor slips back to maybe 1650RPM, which can be calculated using the same standard formula the other direction as 3.77HP! They are NOT required to divulge that this will be incapable of delivering that CONTINUOUSLY, because they used the marketing term "develops", which is technically true, because it doesn't specify a time frame. :slaphead:
