Two tools one circuit?

[Jesse Hoover]

Fixing to start wiring my shop.Only have three tools that would require 220.. Ridgid TS 3650 ,Grizzly G0555 bandsaw ,and a 3 hp duct collector .Do I need to run dedicated circuits for each or can I wire it in such a way that i can use two tools e.i TS and DC or BS and DC together on one circuit?
Any of the combos would not exceed 20 but would come close.Should I go to 10 gauge wire and 30 amp breaker or will 12 guage wire and 20 amp breaker?

[John Coloccia]

I wired every outlet in my shop with 10 gauge. 2 reasons:

1) I only had to buy one gauge of wire
2) I can convert any outlet in my shop to 120V-20A/240-20A/240-30A by doing nothing more than changing the outlet and re-terminating in the box.

I would personally ask your inspector about the multiple machines on one circuit thing. Regardless of code or anything else, he's the one that's going to pass you or give you a headache. Generally, I think it's a bad idea. Even if both machines running steady state won't trip the breaker, one machine running + the in-rush from starting another motor could trip it.

[Jim Terrill]

The way I wired my shop was to decide that the DC would always be on its own circuit, so I wired in a dedicated 110 (12/2 and 12/3) and 220 (10/3) circuit so I can run it on either one without rewiring the circuits if I upgrade. For my shop outlets, I wired everything with 12/2, one circuit for one side of the shop, separate circuit for the other side of the shop.

I also have a separate shop tools 220 circuit. Since the DC is on its own circuit, I can run any of my other shop tools on another circuit with no worries. The question is how many you will be running at once, if you will only have your dc and one tool running together, you may be able to get by with everything on one circuit, but I like the way I wired it with the DC on its own. My wiring for the DC is such that I used 3 and 4 way switches throughout the shop so I can flip on my remote dc without moving away from my work area.

[Tom Veatch]

Fixing to start wiring my shop.Only have three tools that would require 220.. Ridgid TS 3650 ,Grizzly G0555 bandsaw ,and a 3 hp duct collector .Do I need to run dedicated circuits for each or can I wire it in such a way that i can use two tools e.i TS and DC or BS and DC together on one circuit?...

Assuming it's a one man shop, the TS and BS won't be running at the same time. One 240v/20a branch circuit will handle both machines, individually, up to about 3HP per machine. If you think you'll be going larger than that at some point, go for 30 amp circuits. If not, you're wasting your money putting in a 30 amp circuit.

The dust collector will be running simultaneously with the other machines and calls for a dedicated circuit sized for the unit (+ any upgrade you think you might want to do in the future.

So, I'm seeing 1 240/20 circuit for the tablesaw and bandsaw (up to 3HP) and another 240/20 circuit for the dust collector (again up to about 3HP) or 240/30 circuits if you envision going larger than 3HP in the future.

[Zach England]

Can I assume that to meet code you will have to "branch" the circuit downstream from the wall outlet?

[Kent A Bathurst]

Fixing to...........wire it in such a way that i can use two tools e.i TS and DC or BS and DC together on one circuit?
.............Should I go to 10 gauge wire and 30 amp breaker or will 12 guage wire and 20 amp breaker?

"Fixing to" - y'all must be from down this way - 'cept its spelled "fixna".

That's exactly what I did with jointer, TS, Planer and DC. One 240v circuit supplying all 4, except there is never more than DC + 1 on at a time, since there is only 1 of me. 10ga + 30a, because you just never know what's coming next.

I also ran 3+1 10 ga, so I could wire dual-voltage duplex receptacles (photo). The 240 gear doesn't roam around, but I never know when a 120 critter is going to show up in the vicinity of the receptacle. Very glad I did this.

http://assets.twacomm.com/assets/2162925107/product_images/19025.jpg

[Mitchell Andrus]

"Fixing to" - y'all must be from down this way - 'cept its spelled "fixna".



"You need to get a" = 'getchewa'

Charmingly eloquent conservation of energy.
.

[Philip Rodriquez]

You will have to run a dedicated circuit for your DC. The other two machines can share a circuit as long as you do not run them at the same time.

However, the cost of doing dedicated lines is minimal. I say make them all dedicated. In my shop, I regularly run my cyclone, my TS and my jointer at the same time. Everything is 3HP and on its own line. My planer, however, shares a line with my jointer. Therefore, I cannot run both of them at the same time.

[glenn bradley]

Generally finding the path is the hard part. Running 3 instead of 1 would be the least of the problem for me. I have separate breakers and wiring for each 220v. I did make a properly gauged 15' extension cord that came in handy while I was getting over being lazy and ran another circuit for a new jointer ;-)

[Tom Veatch]

Can I assume that to meet code you will have to "branch" the circuit downstream from the wall outlet?

Wired just like any other "branch" circuit except it's 240v instead of 120v and has NEMA 6 (or L6) receptacles instead of NEMA 5 (or L5)

[Kent A Bathurst]

........You will have to run a dedicated circuit for your DC...........

Why?





101010

[Kent A Bathurst]

"You need to get a" = 'getchewa'..........


I stand corrected. You are right. I am personally a recent Yankeee transplant (7 years), although my Yankeee antecedents have occupied this piece of ground on the north side of Peachtree Creek since July 17, 1864. :D:D

[Rod Sheridan]

"You need to get a" = 'getchewa'

Charmingly eloquent conservation of energy.
.


I had to read that several times before the pronunciation and meaning popped into my head.

As you said, charming..............Regards, Rod.

[Philip Rodriquez]

As I said, I am not an expert. However, I would think that he would run the risk of blowing the breaker when he tries to run two tools on it.

I'm not sure what everyone else does, but I like to run my DC when I'm using my tools. After all, it is a really small expense.

[David Thompson 27577]

Fixing to start wiring my shop.Only have three tools that would require 220.. Ridgid TS 3650 ,Grizzly G0555 bandsaw ,and a 3 hp duct collector .Do I need to run dedicated circuits for each or can I wire it in such a way that i can use two tools e.i TS and DC or BS and DC together on one circuit?
Any of the combos would not exceed 20 but would come close.Should I go to 10 gauge wire and 30 amp breaker or will 12 guage wire and 20 amp breaker?

Seems to me that you're probably not capable of using both the table saw and the band saw at the same time.

But of course, you commonly use one of them (or the other) at the same time as the dust collector.

So, put the windbag on it's own circuit. Put the 2 saws on a circuit together.

[Rich Johnson]

I pigtailed one line (10g) from my breaker box two 220 outlets and put a 20a recepticle on each. Where I pigtailed the connection I was sold a box that sat behind the outlet box so it was deep enough to join in the wires for the second box down the line.

I talked to a union electician who sold me the boxes. She told me that if I got inspected they might fail it and all I would have to do is unconnect the pigtail to the second box on the line and put a cover on the second box outlet.

Of course I said well if its not code why do you sell the box to do it.....

She smiled....

Go figure..

[Kent A Bathurst]

As I said, I am not an expert. However, I would think that he would run the risk of blowing the breaker when he tries to run two tools on it.

I'm not sure what everyone else does, but I like to run my DC when I'm using my tools. After all, it is a really small expense.

Oh, I understand now - thanks - but I disagree. A 20a breaker may well blow - which was the OP's point. A 30a breaker will not blow when running DC plus one other tool (gotta use correct wire gauge).

BTW - ".........I like to run my DC when I'm using my tools..........." Good grooming tip - thanks - hadn't thought of that.;)

[Philip Rodriquez]

Mmmm, are you sure? I would expect to blow it with my 3 HP Oneida cyclone and my 15" planer (3 hp).:rolleyes:


Oh, I understand now - thanks - but I disagree. A 20a breaker may well blow - which was the OP's point. A 30a breaker will not blow when running DC plus one other tool (gotta use correct wire gauge).

BTW - ".........I like to run my DC when I'm using my tools..........." Good grooming tip - thanks - hadn't thought of that.;)

[Kent A Bathurst]

Mmmm, are you sure? I would expect to blow it with my 3 HP Oneida cyclone and my 15" planer (3 hp).:rolleyes:

Philip - sorry - that's non-responsive. My reply wasn't specific to your equipment - it was specific to the OP's situation, and it turns out that my draw happens to be comparable to his. I would have to assume you did what you needed to do, as did I, and as should he.

A more global answer would have been more along the lines of run separate 50a circuits to each 10hp machine, but not sure how that makes sense, because............"we're gonna vent our frustration, and if we don't we're gonna blow a 50-amp fuse. You can't always get what you want, but if you try, sometimes you get what you need." :cool: