J. Phil Thien's Projects

Quote from: Schreck on April 10, 2013, 10:06:25 PM
Upon start-up, the amperage will exceed the nameplate amps for a few seconds, but quickly settle down.  Here is a record of the amps drawn by a 1.5 HP dust collector, sampled at 1 second intervals.  It is served by a 20 amp 120 volt circuit breaker.  The (imported) motor nameplate does not list an amperage, but I would expect it to be 15 - 16 amps.  Starting amps were 3x this, but only for a second or two.

According to your picture, when the amps hit 45, why doesn't the circuit fuse trip? I thought if you exceed 20 amps, the circuit fuse would "flip a switch" and stop working. (Sorry, I don't know the electrical jargon. Hopefully you understand what I mean).

The good news is that my garage is already set up for 120 v and 20 amps. So, I should be good to go for a "one-machine at a time" dust collection system.

There's a duct collector with a 1.5 HP induction motor, 1200 CFM and 110V - 16A.

I have a question about the 110V - 16 Amps. What happens when you plug in 16 Amps when the residential house is rated for 15 Amps?

Thanks for the response. That makes sense. I should look for a good primer on understanding engine specs.

Harbor Freight's 8" Portable Ventilator from Chicago Electric.

http://www.harborfreight.com/8-inch-portable-ventilator-97762.html

This is rated from 1400 to 1574 CFM.

Could I use this as a blower between the tophat Thien design (on a drum barrel) and the Farr 9L300NANO cartridge filters?

Most blowers look like a snail but what about an in-line blower? With a blower between the tophat Thien design and the cartridge filters, it would be blowing air since all the dust (theoretically) should be in the drum barrel. If anything gets through, it will be particulate dust that will be captured by the Farr 9L300NANO cartridge filters.

Thanks in advance for your insight and feedback,
Michael