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Connecting my Sawstop to power (2 pole 230 from 3 pole 230?)

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Forum topic by mctabish posted 05-01-2015 02:40 PM 719 views 0 times favorited 9 replies Add to Favorites Watch
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mctabish

3 posts in 587 days


05-01-2015 02:40 PM

I just got my Sawstop, 5hp single phase and tried to connect it to the power (hardwired)
My wall has 4 wires (black, white, red and green)-also single phase

My sawstop has Black white and green. The manual says if I am using 4 wire, to disregard the red.(This saw does not use a neutral line. SawStop recommends the use of a 3-wire cable or conduit, with the black and white wires connected to power and the green wire connected to a grounded metal permanent wiring system or equipment ground.
If a 4-wire cable or conduit with a neutral wire is used, the neutral line should be capped with a wire nut or connected to the unused center terminal)

I did this and the saw starts up very slow and then powers down.

I called Sawstop,it seems like it is only getting 110v. but they could not advise me.

How would I hook this up?
Thanks, Bruce


9 replies so far

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AZWoody

697 posts in 689 days


#1 posted 05-01-2015 02:51 PM

Usually the white is the neutral. From the wall.
The black and the reds are your hot wires for running the 220. They should be what’s running to the saw.

So I would think you would run the black and red from the wall, to the black and white of the saw.

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bonesbr549

1176 posts in 2532 days


#2 posted 05-01-2015 02:53 PM

Ok this is easy. You are getting only 110v. We are also assuming you have that 4 wire coming from the box correctly. Basically you need two hots and a ground for your saw. Take a multimeter which every shop needs. Read the voltages to neutral to find your two hots. (you can also look in your panel and see which wires have the hot.

Normally Green is ground, White is neutral, black is hot, and other color can be hot as well.

I’ll put a link to an image. Again this is what you should see. I always and I mean always, put a meter on my lines to find each hot. Put one meter lead on neutral and the other on the black and you should see 120v. Do the red, and neutral, and probably you will see 110v. Then put one lead on the black and then the red, and you will see probably 235-240v. Once you know your hots, then wire to your saw, and the ground. It will be solved.

I had a bigger problem and mine would not start at all. I was mad frustrated, then found the lockout switch was off . Oppsie!!!! Flipped it and all was good.

Latter, you will love that ICS! Love mine!

http://farm3.static.flickr.com/2608/4010766507_7445e8afb3_o.jpg

-- Sooner or later Liberals run out of other people's money.

View Fred Hargis's profile

Fred Hargis

3945 posts in 1959 days


#3 posted 05-01-2015 03:22 PM

With a cheap VOM, you read which wires are hot and go from there. Like bones said, you need 2 hots and a ground.

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

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crank49

3981 posts in 2436 days


#4 posted 05-01-2015 04:39 PM

”My sawstop has Black white and green. The manual says if I am using 4 wire, to disregard the red.(This saw does not use a neutral line.”
Can’t imagine where they got that logic. There is no normal relationship of red to neutral.

In a single phase or split single phase 4 wire system, the ground is green, the white is neutral, the red and black are both hot. Each hot wire is normally 120 volts measured to neutral or ground. Measured between two hot wires the voltage should be 240 volts.

By the way, one hot can be 110, 115 or 120 volts and two hot wires can be 220, 230 or 240 volts. Voltages are not precise and change during the day depending on demand load on the utility. They generally try to keep it on the high end of the range.

The system that is contrary to accepted practice here belongs to SawStop. They should have black, red and green wires for you to connect to.

-- Michael: Hillary has a long list of accomplishments, though most DAs would refer to them as felonies.

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mctabish

3 posts in 587 days


#5 posted 05-02-2015 04:40 AM

Thanks! I will try these suggestions tomorrow!
Cheers,
Bruce

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TheFridge

5765 posts in 951 days


#6 posted 05-02-2015 04:54 AM

Should be black and red.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View Fred Hargis's profile

Fred Hargis

3945 posts in 1959 days


#7 posted 05-03-2015 11:30 AM

Bruce, did you get it hooked up?

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

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mctabish

3 posts in 587 days


#8 posted 05-03-2015 11:58 AM

I sure did! and this baby just purrs! Sweeet!
Now to get it all tweaked out and make my cross cut sled!

Thanks all!
Bruce

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bonesbr549

1176 posts in 2532 days


#9 posted 05-03-2015 12:42 PM

Congrats. How about some pics

-- Sooner or later Liberals run out of other people's money.

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