Harbor freight dust collector power draw

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Forum topic by Vrtigo1 posted 02-28-2012 05:00 AM 2870 views 1 time favorited 2 replies Add to Favorites Watch
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434 posts in 3197 days

02-28-2012 05:00 AM

I relocated my dust collector this past weekend and had to run a new circuit to its new location, so while I had the panel open, I put an ammeter on it and measured starting and running loads. I’ve seen a bunch of “will it work on a 15 amp circuit” threads at various forums but oddly enough never really saw anyone bring real data as far as current draw, so figured I would post this out there for no real reason other than to give someone something to cite next time the question comes up somewhere.

The circuit I ran was a 20A 120V circuit using 12ga wire and the run is about 35’ from circuit breaker to receptacle. I measured using a Sperry ammeter at the panel. Running load 10.2 amps, starting load 30.4 amps. Starting load peaked at 30.4 for about one second then went down to 10-10.2 amps. Not that it makes any difference, but I have the DC hooked up to a Rockler remote on/off switch.

For what it’s worth, I previously ran this on a 15A circuit that was shared with my overhead lighting (four 4’ t8 fluorescent fixtures and one 4’ t12 fixture) and never had any problems tripping the breaker.

2 replies so far

View SignWave's profile


451 posts in 3240 days

#1 posted 02-28-2012 05:16 AM

I haven’t measured mine, but that sounds reasonable. I have definitely experienced the surge on startup. If I start my DC and table saw (Ridgid 4511 rated nominally at 13A) at the same time (same circuit), it will always trip the 20A breaker. If I stagger them by a couple of seconds, they run together just fine.

-- Barry,

View fussy's profile


980 posts in 3256 days

#2 posted 02-28-2012 07:07 AM

Your numbers match almost exactly what I saw on my dc. I’m runninhg it on a 20 amp 12 ga about 15 feet from the breaker and from the plug on a 5 ft 10 ga sjo extension cord. Previously had a 15 amp circuit that ran lights. The dc tripped once, but the planer (DW735) tripped it frequently. No problems now. I run the dc, planer, jointer, shop vac and miter saw on that 20 amp line. With the exception of the shop vac running with the miter saw, I run only one tool at a time with no problems. Big breakers with properly sized wire are one’s friend. And not hard to do.


-- Steve in KY. 44 years so far with my lovely bride. Think I'll keep her.

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