Underpowered tablesaw

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Forum topic by RSH66 posted 11-30-2020 01:33 PM 305 views 0 times favorited 3 replies Add to Favorites Watch
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3 posts in 57 days

11-30-2020 01:33 PM

I just upgraded to a new Grizzly G0899 table saw, from a rickety old craftsman contractor that bit me a few weeks ago (goy lucky, only a couple of bone chips and a pile of stitches) and converted it to 230V. When I fired it up for the first time it took about 4 seconds to get up to full rpm and bogged down right away when I tried to rip an 18” piece of pine. I used 10 3 wire (I am only using the 2 hots and the ground). My multi meter is showing 236v (116 on one prong and 120 on the other). I have re arranged the motor wiring according to the manual. the breaker in my box is a 60 amp, over kill but the previous owner had a stove in the shop so I just used that. I am plugged into the receptacle directly with no extension cords or anything like that. this is my first attempt at anything Like this an am sure (or really hoping) that I overlooked a simple/fundamental step. Any help is appreciated.

3 replies so far

View Fred Hargis's profile

Fred Hargis

6732 posts in 3462 days

#1 posted 11-30-2020 01:47 PM

First I would check the voltage at the motor, you may have a loose screw somewhere in the circuit. Second I would wait for some of the sparky’s to chime. Third, before you do anything else, change that 60 amp breaker to a 30 amp! Actually, maybe that’s first….the breaker protects the wiring, in this case it ain’t gonna work.

-- Our village hasn't lost it's idiot, he was elected to congress.

View clagwell's profile


341 posts in 762 days

#2 posted 11-30-2020 01:48 PM

You are correct in assuming that something has been overlooked or miswired. Please post pics of the wiring inside you motor, inside the switch, and inside the plug you added.

...My multi meter is showing 236v (116 on one prong and 120 on the other)...

If you are measuring each hot to ground you can’t just add the two readings and be sure that’s the voltage between them.. You have to actually put a probe on each hot at the same time (no probe on ground) and measure that voltage. Do that on your switch, not the wall receptacle.

-- Dave, Tippecanoe County, IN --- Is there a corollary to Beranek.s Law that applies to dust collection?

View RSH66's profile


3 posts in 57 days

#3 posted 11-30-2020 02:16 PM

Replaced the breaker, Checked the voltage, properly, and opened the 6-15 replacement plug to find that my father in law had a hot and the ground in the wrong clips. Swapped them out and the saw hums, easily handles anything I’ve been able to throw at it so far with a new Freud blade. Now I just need to swap out the 20A breaker on the switch with a 10A, which of course is out of stock at Grizzly. Thanks for the help.

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