Powermatic 66 5 HP 3 phase

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Forum topic by ABrock posted 02-12-2015 02:44 AM 5113 views 0 times favorited 11 replies Add to Favorites Watch
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7 posts in 2046 days

02-12-2015 02:44 AM

Topic tags/keywords: powermatic table saw help model 66

I found a powermatic table saw model 66 5 HP 3 phase for sale on Craigslist. The asking price is 850$. Is the a good deal? I will be using my garage as my shop and don’t know much about 3 phase units? Are they better? Is it imperative if I have a 3 phase motor that I will need a 1 phase converter to run it at the house? I am unsure what year it is but it is yellow. Any advice is appreciated. Thanks


11 replies so far

View TheFridge's profile


10861 posts in 2331 days

#1 posted 02-12-2015 02:51 AM

its a good deal of you have 3 phase. Just pretty good after the cost of a converter and wiring plus the saw.

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

View ABrock's profile


7 posts in 2046 days

#2 posted 02-12-2015 02:56 AM

its a good deal of you have 3 phase. Just pretty good after the cost of a converter and wiring plus the saw.

- TheFridge

After looking at thesaw from pictures and talking to guy selling it who doesn’t know much about it either, it lookalike a converter is on it and the manual has pictures and instructions on how to make it a 1 phase w/ 3 hp. Does this sound right and still make this a good deal to jump on? The other thing is I do not have an extra 220v outlet. Do you know how hard it is to convert or would it be easier to just add a 220v to jawbreaker hix and wire in an outlet? Thanks

View MrUnix's profile


8211 posts in 3044 days

#3 posted 02-12-2015 03:03 AM

If you don’t have 220V available, then it doesn’t really matter if it’s single or three phase… you can’t run it on 110V. Many people don’t like three phase.. but it has the advantage of a much simpler motor with really only bearings that need maintenance every 10-20 years or so to keep it going. Add a $200+/- VFD, and you get the advantage of soft start and electronic breaking among other things.


PS: After reading your second post, the seller may be correct.. if it’s really a 5HP 3-phase motor and you run it with a static phase converter to make it single phase, that reduces the power by about 1/3, so 3HP would be about right. I’m not real fond of static phase converters due to that loss in power, but many people prefer them because they are usually cheaper than a VFD and way less expensive than a RPC.

-- Brad in FL - In Dog I trust... everything else is questionable

View TheGreatJon's profile


348 posts in 2078 days

#4 posted 02-12-2015 03:05 AM

If there is a little box on it that is doing the conversion and it will drop the HP down to 3 when run in single phase, that sounds like a static converter. It will work just fine. You get a little less power because the motor actually runs on single phase after start up. It can be harder on the motor, but if you’re not running it all day long it shouldn’t make a difference. A static phase converter costs about $100, and if it’s already wired up, all you have you do is plug it into a 220v outlet.

-- This is not the signature line you are looking for.

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2387 posts in 4392 days

#5 posted 02-12-2015 03:13 AM

I think it is a decent deal. I love our PM66 saws. I have in the past run 2 table saws that were 3 phase 3 hp Unisaws with a static converter and technically speaking there is some power loss but to the end user it is not noticeable. I still could not slow or stall out my blade during feed rate. Technically I only had 2 hp based on using a static converter on a 3 hp motor but I can honestly say that running that saw in that set up felt as if it were nearly twice as powerful as the 1 1/2 hp contractor saws I used to use when first starting out. So don’t be afraid of using a static converter, it will work great.

-- .

View MrUnix's profile


8211 posts in 3044 days

#6 posted 02-12-2015 03:23 AM

Just another thought.. given the age of the machine and the sellers lack of knowledge about it, you really should, at the very least, replace the arbor and motor bearings. They may be fine, but I doubt the current seller has done any maintenance to it and it’s cheap insurance that will prevent much more expensive repairs in the future should they be bad or marginal. Belts may also need to be replaced depending on their condition. Something to keep in mind as the cost of ownership never stops at the initial purchase price. If you are comfortable doing the work yourself, then you can save some cash.. but if not, be ready to pay dearly to have someone else do it for you :)


-- Brad in FL - In Dog I trust... everything else is questionable

View avsmusic1's profile


660 posts in 1530 days

#7 posted 05-24-2018 11:03 AM

Sounds like it’ll work for you. Where are you licated though? That’ll have a lot of influence on wether or not it’s worth the asking price

I’m in CT and paid 650 for a single phase 3hp model from the 80s. That’s probably a little lower than the going rate in my area but not dramatically. Probably 650-800 was fair given it needed some TLC beyond bearings. Three phase sells cheaper in my area (and, most)

View darthford's profile


612 posts in 2769 days

#8 posted 05-26-2018 06:06 PM

3ph always lower priced in our area, $400-$600 for a Model 66 3ph depending on condition.

View Woodmaster1's profile


1536 posts in 3432 days

#9 posted 05-26-2018 08:06 PM

I used a powermatic 66 at the school where I taught and it is 50 years old and running strong. That would be the last tablesaw you will have to buy. If they stand up to 50 years of student abuse you will not harm it.

View pontic's profile


801 posts in 1453 days

#10 posted 05-28-2018 11:46 AM

I wanted to get 3 phase service to my farm.The transmission feed was only one phase down our road. The cost to me for the power company to add another two transmission legs was going to be $28,000.00. So single phase is what I have.

-- Illigitimii non carburundum sum

View mmToolPart's profile


2 posts in 694 days

#11 posted 10-24-2018 06:46 PM

I just finished converting a PM66 from 3 phase power to single phase. To complete this project I replaced the motor and switch. It was a simple process once I found the appropriate wiring diagrams and figured out how to remove the motor.

I actually made a how-to video and posted it to YouTube since I couldn’t really find anything about this online. If you’re new to electrical like me, this video should help get you started:

Here are links to the parts I used – is the largest distributor of Powermatic table saw motors in the world. As such they get better prices they pass on to customers, this is the lowest price you’ll find on these parts and they come directly from the Powermatic warehouse:

-Single Phase 3hp Switch:

-Single Phase 3hp Motor:

Also, here is a link to the wiring diagrams:

-Operating Instructions and Parts Manual (Wiring Diagrams):

Hope this helps!!


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