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Offline Dawg25385

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Compressor and power recommendations
« on: September 18, 2016, 11:39:34 AM »
Hey all. I'm going to be starting wiring on the shop soon. Need to know how much juice to run to the compressor room so I can tell the sparky what I need.

Will either go with a 60gal or 80gal upright, probably 60 unless somebody talks me out of it. Nothing fancy like some of you guys have... I don't have the time or the know-how for a rebuild of an older unit. Don't want to go as cheap as Husky or Kobalt, but not as expensive as top brands I've never heard of.

It seems for some of the 60s, 30amp would be sufficient? 230 volt


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Offline Bigdave_185

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Re: Compressor and power recommendations
« Reply #1 on: September 18, 2016, 11:56:38 AM »
Go big or go home!


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Offline KensAuto

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Re: Compressor and power recommendations
« Reply #2 on: September 18, 2016, 12:24:31 PM »
The husky would be more than enough for what you need imo.
I would consider an 80 gal though.  It will keep the pump from cycling as much, which in turn makes the electrical components last longer,  with less power consumption.

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Offline Dawg25385

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Re: Compressor and power recommendations
« Reply #3 on: September 18, 2016, 12:27:00 PM »
Thanks for the feedback!


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Offline Bob Smith

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Re: Compressor and power recommendations
« Reply #4 on: September 18, 2016, 12:30:24 PM »
If you plan on using air to blow out the sprinkler lines, the 80 will be better.

Offline Dawg25385

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Re: Compressor and power recommendations
« Reply #5 on: September 18, 2016, 12:44:28 PM »
480 for the 60, and 800 for the 80... Hmmm


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Offline stlaser

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Re: Compressor and power recommendations
« Reply #6 on: September 18, 2016, 01:31:18 PM »
What are you planning on running with the compressor? Also I upgraded the head to a two stage and am able to use a 60 gal with no issue. The two stage pumps more Cfm quicker & depending on where you have compressor to where you plan on plumbing hard line you can gain a lot of extra capacity in the piping by bumping that up a couple sizes. In my old shop I also picked up a broken craftsman 40 gallon compressor for nothing & stripped tank off then mounted it in rafters to add extra capacity.

5hp motor will run just fine on a 30 amp 220 double pole breaker with 10ga wire (I think is correct....)

I also can't say enough about Eaton compressors, Dons unit is way overkill. Neither of the two I have owned were that large or expensive FYI......
« Last Edit: September 18, 2016, 01:33:01 PM by stlaser »
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Offline Flyin6

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Re: Compressor and power recommendations
« Reply #7 on: September 18, 2016, 07:02:35 PM »
I run a 50 amp 230 VAC circuit to my compressor. But I have a 7.5HP 4 cylinder 80 gal unit which sues a lot of juice to start up.

Why not just put in a 50 amp line and be able to handle about anything?
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Offline KensAuto

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Re: Compressor and power recommendations
« Reply #8 on: September 18, 2016, 07:36:03 PM »
It's nice to have a 50a circuit. You can use it to power multiple tools in the future, like a welder. The only problem is, if your compressor is a 20-30a unit, and it had an issue, it would have to practically short out to kick the breaker. That being said, I had my old place wired like that...a 50a with a 22a compressor and never had an issue. Maybe I was lucky..dunno
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Offline Bob Smith

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Re: Compressor and power recommendations
« Reply #9 on: September 18, 2016, 09:27:57 PM »
Use the 50amp wire and plug, use a 30amp breaker set in the panel until you need the 50 then change it out. Or just do the 50amp and hope the motor never has a problem.

Offline TexasRedNeck

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Re: Compressor and power recommendations
« Reply #10 on: September 18, 2016, 11:27:56 PM »
^ this


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Offline Dawg25385

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Compressor and power recommendations
« Reply #11 on: September 18, 2016, 11:33:43 PM »
I won't run much besides a impact gun, cut off tool, grinder and sander maybe, and some finish nailers which use barely nothing, at least in the foreseeable future

And I'll have a 50 plug on the other side of the shop for a welder anyway, right next to the panel. so no need to consider that with the compressor circuit. It will be dedicated.

So while I may elect to go with a 60gal now to save some money, I will at least wire with the bigger wire to be able to run 50 amps.

Buy once cry once, on the wiring anyway :)


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« Last Edit: September 18, 2016, 11:34:55 PM by Dawg25385 »
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Offline Bear9350

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Re: Compressor and power recommendations
« Reply #12 on: September 19, 2016, 11:00:59 AM »
If you are using the sanders and grinders a lot, and use the cut-off tool for prolonged periods I might consider the 80 gallon.  Those types of tools require a lot of air.  I think you would be taking a lot of breaks during prolonged use with a 60 gal single stage unit.

I also have a dedicated area for my welder.  But, on more than one occasion I have wished I would have been able to move the welder to the other side of the garage instead of moving said heavy/ cumbersome object to the welder. If you are wiring a plug up I think it would be a good idea to make it compatible to the welder, especially if it is on the other side of the building.

Offline rpar86

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Re: Compressor and power recommendations
« Reply #13 on: September 19, 2016, 02:18:23 PM »
x3 on what Don, Bob and TRN said. Oversize wire, appropriate size breaker. Done.
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Offline stlaser

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Re: Compressor and power recommendations
« Reply #14 on: September 19, 2016, 02:22:15 PM »
Wire up an extension cord for the welder & make sure welder is on cart with casters. Only way to roll, literally.... ;)
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Offline JR

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Re: Compressor and power recommendations
« Reply #15 on: September 19, 2016, 02:49:24 PM »
More air storage is where it is at. I have a 5hp-80 with 175psi thats US made. Its quiet and its motor is twice the size of the box store stuff.

Not sure if you are thinking about it, but do not even think of oil-less.
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Offline Flyin6

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Re: Compressor and power recommendations
« Reply #16 on: September 19, 2016, 09:16:23 PM »
I always plug the eaton units

American made big and burly cast iron things

Shipping from Dayton, Ohio would be a challenge but it's a buy once kind of thing
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Offline stlaser

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Re: Compressor and power recommendations
« Reply #17 on: September 19, 2016, 10:03:05 PM »
I have a good freight connection if you need & can't say enough about the eaton either. You don't need a Don size compressor for what you're doing. This one would do you just fine, I ran it hard for 10 years.

https://www.eatoncompressor.com/bare-pumps/18-cfm-air-compressor-pump

Granted you would need a tank & a motor but it's a cheap way to go. I blew up one of those oil less ones Ken favors (it was well used & gifted to me) so I had an 80 gallon tank. Bought that & ran it for years on a tractor supply 5hp motor.....
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Offline JR

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Re: Compressor and power recommendations
« Reply #18 on: September 20, 2016, 01:33:34 AM »
This is almost 800 less than I paid local and you wouldn't pay tax. That is twice the comp you will get at any box store.

https://www.eatoncompressor.com/piston-compressors/industrial-series-5-10-hp/industrial-5hp-2-stage-single-phase-80-gallon-vertical-air-compressor
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Offline stlaser

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Re: Compressor and power recommendations
« Reply #19 on: September 20, 2016, 09:50:47 AM »
This is almost 800 less than I paid local and you wouldn't pay tax. That is twice the comp you will get at any box store.

https://www.eatoncompressor.com/piston-compressors/industrial-series-5-10-hp/industrial-5hp-2-stage-single-phase-80-gallon-vertical-air-compressor

Correct, and no more than he will most likely use it (mine was daily used for a business) then it should last a lifetime. Putting a compressor together is not hard. Somewhere on here is my current build thread of the one I have now. Tanks can be found on the cheap & it you could find a blown compressor with good 5hp you're 2/3 the way there.....
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Offline TexasRedNeck

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Re: Compressor and power recommendations
« Reply #20 on: September 20, 2016, 07:45:49 PM »
https://houston.craigslist.org/tls/5727387008.html

What do you guys think about this?  I was thinking of upgrading the pump and motor if I could get it for a deal
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Offline stlaser

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Re: Compressor and power recommendations
« Reply #21 on: September 20, 2016, 08:18:47 PM »
The tank is worth $250 imo

But you being in Houston I would check & see if you have any equipment resale places local with tanks.
« Last Edit: September 20, 2016, 08:19:59 PM by stlaser »
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Offline TexasRedNeck

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Re: Compressor and power recommendations
« Reply #22 on: September 20, 2016, 09:05:54 PM »
Any concerns about the age of the tank?  1941? 
Kids today don't know how easy they have it. When I was young, I had to walk 9 feet through shag carpet to change the TV channel.

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Offline stlaser

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Re: Compressor and power recommendations
« Reply #23 on: September 20, 2016, 09:31:14 PM »
Possibly I suppose, normally they are pretty thick. If it's a concern pass on it & find a newer tank. The one I picked up here wasn't two years old.
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Offline Bob Smith

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Re: Compressor and power recommendations
« Reply #24 on: September 20, 2016, 09:34:47 PM »
Wow, anything either side of 1940 by 10 years is old...right Don...?

Offline Dawg25385

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Re: Compressor and power recommendations
« Reply #25 on: September 20, 2016, 11:23:03 PM »
So after you guys got me thinking about Eaton, I saw this on offerup tonight...



Craftsman Professional 60 gal tank for $40 bucks


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Offline stlaser

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Re: Compressor and power recommendations
« Reply #26 on: September 20, 2016, 11:29:49 PM »
You realize my 2 stage only has a 60 gallon tank & it keeps up with my big impact...... & that's a smoking deal on a tank. I would buy it just for extra storage if nothing else.
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Offline Dawg25385

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Re: Compressor and power recommendations
« Reply #27 on: September 20, 2016, 11:37:15 PM »
Hmmm now the wheels are turning.

So 40 for a tank. 240 for the Eaton pump. How much would you estimate for motor, wiring and plumbing?


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Offline JR

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Re: Compressor and power recommendations
« Reply #28 on: September 21, 2016, 12:31:02 AM »
A 60 is fine for almost anything up to blasting or sanders. Depends on the sander but blasting uses alot of CFM.

Impacts, nailers and such are no big deal. Heck my little 8gal 2hp does that.
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Offline JR

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Re: Compressor and power recommendations
« Reply #29 on: September 21, 2016, 12:33:52 AM »
I have seen good 5hp motors for $200, then $240 for the pump. Wiring and fittings at least $100.
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Offline stlaser

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Re: Compressor and power recommendations
« Reply #30 on: September 21, 2016, 12:34:15 AM »
Hmmm now the wheels are turning.

So 40 for a tank. 240 for the Eaton pump. How much would you estimate for motor, wiring and plumbing?


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Tractor supply was least expensive quick place to get a 5hp motor for me the first go around. I purchased my motor from Eaton this last time but it had to be a "true" 5hp and motors are expensive to ship reason I didn't buy it from them first time. They have them listed on their site for sale. The pressure switch is $40 at tsc & figure $15 for a dryer cord then add some money for a couple belts & $50 for misc plumbing parts & you should be pretty close.

Edit: tsc has them $269 with free shipping & I'm sure they have discount coupons out there
« Last Edit: September 21, 2016, 12:39:41 AM by stlaser »
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Offline Dawg25385

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Re: Compressor and power recommendations
« Reply #31 on: September 21, 2016, 12:47:34 AM »
So I'll be lookin at about 600-700 for essentially an Eaton compressor. I could get down with that.

This is all new to me tho fellas. I am sure I can put one together, but I'm going to have a million questions.

I suppose I'd have to do a compressor build thread too...

Shawn what do you think shipping on the pump would be?


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Offline JR

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Re: Compressor and power recommendations
« Reply #32 on: September 21, 2016, 12:55:30 AM »
But of course with lots of pictures!
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Offline stlaser

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Re: Compressor and power recommendations
« Reply #33 on: September 21, 2016, 01:07:23 AM »
So I'll be lookin at about 600-700 for essentially an Eaton compressor. I could get down with that.

This is all new to me tho fellas. I am sure I can put one together, but I'm going to have a million questions.

I suppose I'd have to do a compressor build thread too...

Shawn what do you think shipping on the pump would be?


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Easy to assemble, have eaton quote the shipping & then tell them you would like to quote your guy for that too. What I need for that quote is the weight, crate dimension LxWxH & pickup / drop off zip code. You can just pm me those numbers & my guy can quote it.
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Offline Dawg25385

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Re: Compressor and power recommendations
« Reply #34 on: September 21, 2016, 04:12:20 PM »
Well somebody beat me to the punch on the tank. Damn


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Offline TexasRedNeck

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Re: Compressor and power recommendations
« Reply #35 on: September 21, 2016, 04:23:03 PM »
Better things await!


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Offline Dawg25385

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Re: Compressor and power recommendations
« Reply #36 on: September 21, 2016, 04:35:43 PM »
Heck, even if I didn't use it for a compressor 40 bucks would have been a heck of a start on a new smoker! Double pissed


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Offline Flyin6

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Re: Compressor and power recommendations
« Reply #37 on: September 26, 2016, 11:53:14 AM »
Wow, anything either side of 1940 by 10 years is old...right Don...?
I wouldn't exactly know...;-)
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