Reply by jamsomito

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Posted on calling all Harbor Freighters - dust collector stock question

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433 posts in 939 days

#1 posted 02-03-2018 05:08 PM

Yes, the 12” impeller would be on the future upgrade list… after the cartridge filter and a separator. But yes this is why I’m concerned about making sure to get the bigger motor.

Interestingly, doing the math P=V*A, and converting 0.746kW/HP, I’m getting 2HP = 12.43A @ 120V, so the 13A number makes sense. Maybe the 20A rating on the older green model was some sort of peak as it was labeled, obviously consuming more at startup. This is assuming input power, not accounting for motor efficiency or fan efficiency (or load factor). Throw in motor efficiency and you’re up around 15-16A input for 2HP mechanical power. So maybe the unit labeled 15A is still about the same size and it was just a labeling change.

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