15-16 amps which is the max copper wire and the breaker will allow, at least over here.
That comment is kind of confusing! First, where is "over here" and second, what does it have to do with the OP buying a 5 HP motor?
Show me a 5 HP motor on 240 volts that draws 15 amps. I would really love to see one!
It's called rated power which is subject to efficiency. That's why I said not factoring in cos (fi). It won't do 5 HP. If it draws 20 amps then it's not a 5 HP motor but more.
That's like saying "ignoring gravity" or "ignoring aerodynamic drag." Yes, we did that in school to simplify problem solving, but one does not simply ignore power factor in the real world. It is a fact of physics, so the branch circuit must be sized to supply the apparent power or you will regret it. Power factor does not impact net power consumption by much, but it does impact wire sizing.
Definitely will avoid the SPL/"special" junk.
You don’t need to avoid them, you just have to know what you are looking at.
what frame is it? i've got a 3.7kW/5HP WEG 56HZ frame i might be willing to trade.
What pump is on that unit? Typically 60 gallon compressors are 15-17 amp units. They used to get really big power numbers but now are typically rated around 3hp. It would be a waste to buy a true 5hp motor for a 3hp pump. However, some high end 60 gallon units did come with good pumps so don't assume 60 gal = cheap compressor.
I think the idea is you can ignore the HP rating. If you look at the plate and see the motor is drawing 15, 20, 25 or whatever amps at a known voltage, as long as the motor is rated for continuous duty, you know what you're getting. You don't need to worry about what the advertised HP is.
no model number off hand, ebay listing is gone, UPE Group was the seller.
It is. They don’t list a h.p. number, but they will generally have an FLA number, from which to deduce horsepower from. Sometimes the number is trickier, expressing it in kilowatts or KVA or something that makes it not easy to know what it is.
See if it has a label like the one in the attached photo. If it is a 3-phase motor, the chances are high that the compressor came out of a commercial shop and should be pretty heavy-duty.
A 5hp VFD is $600-1200. Getting a 5hp single phase motor on the low end of that range shouldn't be all that hard
post a pic of the data plate
most single phase 5hp compressor motors are 56 frame. I've never seen a 56 frame 5HP 3 phase motor, so you'll need a new base plate, sheave, possibly a different belt, etc. it all adds up, time and money.
I think he meant "real" 5hp. That's an SPL rated motor
13.4A*208V*1.73*.8=3800W. that's pretty close. input power is 4800W, so 80% efficient. the numbers line up...
compressor-source.com
Thats the same I bought a YR ago but different shaft dia... Pretty good deal for TODAY. Looks like other variations available at the same price point.13.4A*208V*1.73*.8=3800W. that's pretty close. input power is 4800W, so 80% efficient. the numbers line up...
here's the single phase equivalent:
5 HP Air Compressor Electric Motor 56HZ Frame 3440 RPM Single Phase WE
5 HP 56HZ Frame Single Phase 3440 RPM WEG Electric Motor This listing is for a brand new WEG 5 horsepower air compressor motor model number 00536OS1DCD56HZ-S, this motor is 230 volt, 20.3 AMPS, 60 Hz, 56HZ Frame, single phase, 7/8" diameter shaft, and 3440 RPM. This motor is specifically...
