Looking at a used paf430-1. How are they figuring 4HP? The electrical

>>1140250
Yup marketing wank. Like 3hp skilsaws on standard 120volt outlets.

You mean my 5.5HP shopvac which weights like 4 pounds isn't actually 5.5HP?

>>1140253
Well I mean its a 30 gallon air compressor. Didn't think it was out of the realm of possibility.

Plus its from devilbiss so I wasn't going to immediately conclude that they're just outright lying.

>>1140259
Well HP and watts are measurements of the same thing, power. Like feet and meters for distance. 1 HP = 745.7 watts. Your 1800w compressor is 2.41384 HP.

>>1140250
As with vacuums and such, marketers try to play up "peak horsepower" rather than operating horsepower. As with most electric motors, at startup it draws considerably more power than while running under load, and that's what the number usually indicates in these cases. Look for the volts and amps it requires to run for real comparisons.

>>1140251
>Like 3hp skilsaws on standard 120volt outlets.
This sort of thing isn't out of the realm of possibility. I have a 50A 120V outlet in my garage. 20A 120V is just over 3hp, and I have a chop saw that can trip 20A breakers. Probably hard to find in a skilsaw though.

>>1140250
any time you see a 4hp induction motor without a lifting eye, you know it's straight bullshit.

considering the tiny cooling fins on the compressor head i'd be surprised if it was even 3/4hp.

>>1140309
Might want to replace the cap's on your chopsaw mate.

>>1140265
this
hp=watts/746

File: watts to hp.png (12KB, 672x393px) Image search: [Google]

12KB, 672x393px

>>1140265
this

the calculation assumes 100% efficiency.
It consumes 2-1/2HP of electricity but probably can do 2HP of work.

>>1140250
>How are they figuring 4HP?

by locking the shaft so it can't turn and noting the 3000W it consumes until the breaker trips or the motor burn out.

>>1140370
Heh...

>>1140265
>>1140360
>>1140367
I'm aware hence I mentioned the 1800W figure.

>>1140351
Nah, that's a common issue with that model. The motor is just overpowered for the nominal current rating, and draws enough to trip a regular breaker when you push hard on something thick.