On Sat, 29 Jun 1996 JackiHarry@aol.com wrote:
> Now for the other thing I was just reminded of by a ad for a sears 5HP
> oil-less compressor:
> many of the compressor companies (starting w/ campbell-hausfeld) use a
> different rating system for motor horsepower than used to be "standard": they
> give "input" horsepower, not what the motor puts out. AC induction motors
> are around 50% efficient, so a "5HP" motor (That draws 15a@220v or 30A@115v)
It figures. I was attracted by a low price on a new Sears 5 HP
compressor. I wrote down the cfm ratings at 40 and 90 psi, and found
they were only slightly higher than the ratings on my old Sears 2 HP
compressor.
Ray Gibbons Dept. of Molecular Physiology & Biophysics
Univ. of Vermont College of Medicine, Burlington, VT
gibbons@northpole.med.uvm.edu (802) 656-8910
|