- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Please see below courtesy of engineeringtoolbox.com
Electrical power is in general rated in watt (W) or horsepower (HP). A horsepower is a unit of power equal to 746 watts or 33000 lb ft per minute (or 550 lb ft per second).
A watt is equal to the power produced by a current of 1 amp across the potential difference of 1 volt. A watt is 1/746 of 1 horsepower.
Even if the watt is the base unit of electrical power, it is common to rate motor power in either horsepower or kilowatts.
Power in Watts
Direct Current
Electric power supply to a direct current (DC) motor: PkW = ?m U I / 1000 (1) where PkW = power (kW) ?m = motor efficiency U = voltage (V) I = current (A, amps)
Electric power supply to a alternating current (AC) motor:
Single Phase
PkW = ?m U I PF / 1000 (1b) where PF = Power Factor
Two Phase Four Wire
PkW = ?m 2 U I PF / 1000 (1c)
Three Phase
PkW = ?m 1.73 U I PF / 1000 (1d)
They do not equate at all. A foot pound is a unit of torque and work. Horsepower is the RATE of doing work. If you know the RPM at a given torque, then you can calculate HP
If the unit does not have the horsepower rating, but has the AMP rating, try this formula found in Answers.com
"Amps are a factor in calculating power, and so can be used to
determine horsepower, but only when other factors are present. Given other factors, you can find the horsepower. The easiest
way is to determine watts by multiplying amps X volts. Next multiply watts by
.00134 and you have horsepower. If: amps (A)= 20 and volts
(V)=120 then A X V =2400 watts (W) 2400
watts X .00134 = 3.216 horsepower"
that year (1991) only had a 2.2 and a 3.1 L motor VIN (T) according to my manual be that as it may
Horsepower @ RPM was 140 @ 4800
Torque @ RPM was 180 @ 4800
No, When an air compressor is built, it requires a motor or engine to power the process of producing air. The horsepower is not the only component of the equation. It has to be combined with the compressor pump that it runs to produce the air needed. The bigger the horsepower does not necessarily mean more air. Remember to keep your required cfm in mind. Horsepower does not make you work more efficiently, but horsepower working in unison with a quality pump that produces enough cfm for your needs.
Make sure when shopping that you look for the running horsepower and not the peak horsepower you get at startup. Some manufacturers have falsely advertised or implied the peak horsepower to be the normal run horsepower. At start-up, there is a surge of power needed to start the motor and can be 1.5-3 times the amount of running power needed. This means the horsepower need for the motor peaks as well, but then drops back down to normal. Many of these manufacturers are involved in a class-action lawsuit for misrepresentation. They have used man’s machismo of “the more horsepower, the better” to their advantage to make sales. These aren’t cars we’re talking about!
Horsepower is the maximum power produced by the motor. Saws with high horsepower ratings are good for pattern cutting and cutting down thick stock. Higher horsepower also allows the saw to cut through thick stock without bogging down or burning the wood.
×