There's been several different posts about duct collection systems and among those are references to (generically) "shop vacs" with various peak horsepower ratings.
As an electrical engineer, I have always been baffled and dismayed by the php ratings given by manufacturers. Since most of these units are plugged into 110VAC outlets, here is a table of the required amperage for the various php ratings. Most of us have 15 or 20 Amp service at each outlet, so why don't those with vacs rated above about 2hp trip the breaker? Inquiring minds want to know...
As an electrical engineer, I have always been baffled and dismayed by the php ratings given by manufacturers. Since most of these units are plugged into 110VAC outlets, here is a table of the required amperage for the various php ratings. Most of us have 15 or 20 Amp service at each outlet, so why don't those with vacs rated above about 2hp trip the breaker? Inquiring minds want to know...