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Help with new Grizzly G0833 table saw

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Forum topic by KrH2 posted 08-11-2018 09:45 PM 993 views 0 times favorited 11 replies Add to Favorites Watch
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KrH2

5 posts in 394 days


08-11-2018 09:45 PM

I’d like to get you guys’ thoughts on something before I call Grizzly on Monday. I have a bran new G0833 table saw. The saw came pre wired for 220v operation. It cuts beautifully. The biggest test I’ve put to the saw is a 40” 10/4 piece of Maple. It cut no problem with a Forrest WWII blade. Last night I was using a ¾” dado stack. The saw starts fine but then immediately trips the on-board breaker. It was very hot in my shop so I thought maybe the motor was too hot. The motor is rated for 40c. I don’t remember for sure but that either means the saw cuts off at 104F or 104F + ambient temperature. The motor was hot to touch but not super hot. I slept on it and tried again this morning. Cool shop, cold motor. Tripped again with that dado stack. The on-board circuit breaker resets after I hit stop. But trips as soon as the saw gets up to speed.

Some facts:

I tested each leg of power. L1 = 120.1v and L2 = 120.3v. Together they tested at 240.4v.
New 20 amp double pole breaker in the panel.
Verified all motor wiring is tight and wired correctly.
12/2 gauge wire 6’ from panel.
Saw motor is rated 8 amps at 230 volts.
On/off switch is a simple paddle (non-magnetic)
On-board circuit breaker is rated 10 amps and is what Grizzly supplied.
Blade is square with the miter slot.
Blade spins freely by hand.
Pulley is in line with the arbor.

My old Bosch 4100 saw ran this dado stack with no issues. This saw is 2hp and should handle this dado no problem especially with no load on the blade. My thought is the on-board breaker is weak even though it is rated at 10 amps.

Thoughts?


11 replies so far

View ArtMann's profile

ArtMann

1396 posts in 1235 days


#1 posted 08-11-2018 10:18 PM

You need to call Grizzly. It could be a warranty issue and they ned to be involved from the start.

View GaryCK's profile

GaryCK

50 posts in 468 days


#2 posted 08-12-2018 01:46 AM

It sounds like the breaker trips while the saw is spinning up with the dado stack, before you start to cut with it. Is that correct? If so, that shouldn’t ought to be and I think ArtMann is right in that you’ll need to call Grizzly customer service.

-- Gary, Wisconsin

View KrH2's profile

KrH2

5 posts in 394 days


#3 posted 08-12-2018 02:17 AM



It sounds like the breaker trips while the saw is spinning up with the dado stack, before you start to cut with it. Is that correct? If so, that shouldn t ought to be and I think ArtMann is right in that you ll need to call Grizzly customer service.

- GaryCK

That’s correct. It cuts out about 3 seconds after starting. No load except the (6) dado stack. Thanks guys.

View CaptainKlutz's profile

CaptainKlutz

1494 posts in 1913 days


#4 posted 08-12-2018 04:07 PM

+1 Call Grizzly.

If it starts and reaches full speed before it trips, then my guess is something in run circuit has a short, maybe the capacitor, or loose connection at the centrifugal switch located on back of motor. Could also be a weak/faulty breaker, but IME breakers tend to fail before 3 seconds due higher inrush current, not once motor has reached full speed?

If you put the regular blade back on, or run saw without a blade does problem continue?

Yes, check run circuit wiring, connections, and capacitor.

No, then higher mass of dado blade and longer start up is effecting current draw. Start by replacing internal breaker, as replacement is about only way to trouble shoot one. Check loaded line voltage as well. If voltage droops under load, then current will exceed motor name plate rating; and all kinds of weird stuff can happen.

I am just an idiot electrical engineer second guessing Grizzly panel wiring, but worry what kind of 10A breaker Grizzly used, as it seems small for 8A 220V motor. Inrush current is at least 2x and while 10A breaker takes long time to trip with only 2x rated load, it is going to get tired of constantly being overcurrent at start (and eventually begin to trip early after thousands of cycles). Low voltage conditions would accelerate the failure. I would expect to find a 15A internal breaker? Oh, well; not my design.

Best Luck.

-- I'm an engineer not a woodworker, but I can randomly find useful tools and furniture inside a pile of lumber!

View KrH2's profile

KrH2

5 posts in 394 days


#5 posted 08-13-2018 01:08 AM

The capacitors checked out. I bypassed the 10amp breaker and it ran/cut fine. I then put the CB back in, removed 2 of the chippers and it ran perfect. I’m guessing startup with that mass is drawing more than 10amps or the CB is weak. I’ll see what Grizzly says tomorrow.

https://photos.app.goo.gl/Tm5P2XzACdzLYsdd6

View GaryCK's profile

GaryCK

50 posts in 468 days


#6 posted 08-13-2018 03:07 AM

Would you mind posting a follow-up here with what you learn from Grizzly and what they’re planning to do? I’m curious what you’ll find out. Thank you.

-- Gary, Wisconsin

View Shaun Ragland's profile

Shaun Ragland

14 posts in 775 days


#7 posted 08-13-2018 04:20 AM

I’ve dealt with Grizzly many times. I get pissed that you buy a tool from them that you expect to work for years and when you call them they want you to troubleshoot and be their technician for them. Your lucky, you have an electrical background and you have done all the homework but I have to ask you, HOW MUCH DOWN TIME have you had to eat because of Grizzlys product?

In my shop, time is money, we are woodworkers that know that electricity goes back and forth, we aren’t Grizzly technicians and we don’t have time to fuck around with a tool.

I bought a 5hp sliding table shaper from Grizzly and after it was delivered and I assembled it, on first run it had a horrible wobble in the spindle.
I couldn’t find anything loose or obviously wrong.

I called Grizzly repeatedly to get this shaper replaced and they constantly wanted me to check one more thing. After 3 months of this bullshit and having my attorney write them a nasty gram letter, I finally got a new one. By this time, the job I originally needed and ordered it for was completed and out of the shop.

Needless to say, I have learned my lesson on trying to save money on tools that pay my bills in the end run.

My philosophy now is to buy once, cry once !

-- Shaun Ragland

View KrH2's profile

KrH2

5 posts in 394 days


#8 posted 08-13-2018 04:56 AM


Would you mind posting a follow-up here with what you learn from Grizzly and what they re planning to do? I m curious what you ll find out. Thank you.

- GaryCK


It sounds like the breaker trips while the saw is spinning up with the dado stack, before you start to cut with it. Is that correct? If so, that shouldn t ought to be and I think ArtMann is right in that you ll need to call Grizzly customer service.

- GaryCK


Would you mind posting a follow-up here with what you learn from Grizzly and what they re planning to do? I m curious what you ll find out. Thank you.

- GaryCK


It sounds like the breaker trips while the saw is spinning up with the dado stack, before you start to cut with it. Is that correct? If so, that shouldn t ought to be and I think ArtMann is right in that you ll need to call Grizzly customer service.

- GaryCK


It sounds like the breaker trips while the saw is spinning up with the dado stack, before you start to cut with it. Is that correct? If so, that shouldn t ought to be and I think ArtMann is right in that you ll need to call Grizzly customer service.

- GaryCK


I’ll post what Grizzly says i’n the morning Frustrating. The saw took a week to get here. The fence railss got lost so smother week emt by now this.

View KrH2's profile

KrH2

5 posts in 394 days


#9 posted 08-13-2018 03:00 PM



I am just an idiot electrical engineer second guessing Grizzly panel wiring, but worry what kind of 10A breaker Grizzly used, as it seems small for 8A 220V motor. Inrush current is at least 2x and while 10A breaker takes long time to trip with only 2x rated load, it is going to get tired of constantly being overcurrent at start (and eventually begin to trip early after thousands of cycles). Low voltage conditions would accelerate the failure. I would expect to find a 15A internal breaker? Oh, well; not my design.

You were correct Captain Klutz. I spoke to Grizzly just now. Apparently it’s a known issue. The 10amp breaker isn’t enough with this saw. They are sending me a 15amp CB. Thanks for your input guys.

View CaptainKlutz's profile

CaptainKlutz

1494 posts in 1913 days


#10 posted 08-13-2018 03:18 PM

NVM, deleted what I was going to post….

You were correct Captain Klutz. I spoke to Grizzly just now. Apparently it s a known issue. The 10amp breaker isn t enough with this saw. They are sending me a 15amp CB. Thanks for your input guys.

- KrH2

Glad this was an easy solution.
Personally hate to be right on something like that….
Cheers!

-- I'm an engineer not a woodworker, but I can randomly find useful tools and furniture inside a pile of lumber!

View GR8HUNTER's profile

GR8HUNTER

6210 posts in 1131 days


#11 posted 08-13-2018 03:23 PM

sounds like they dropped the ball on this saw … just install a new breaker before it goes out the door :<)) OR figure out the problems

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN

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