I'm in the process of wiring my 24x28 shop (actually a new detached
garage). Presently, I have a tablesaw, drill press, radial arm saw and
joiner (more to come later). I've got each wall on it's own 20amp
circuit with 4x4" boxes every 6 feet. I was originally planning on
making each box a quad recptacle but with the 12 ga wire, it's a REAL
pain trying to get the two outlets and the wires in the box.
So I'm trying to decide whether to replace all the 4" square boxes
with 4 11/16" square boxes or just go with one outlet per box.
Thanks in advance,
> So I'm trying to decide whether to replace all the 4" square boxes
> with 4 11/16" square boxes or just go with one outlet per box.
Good idea, boxes are cheap.
Trying to wire in a small box ranks right up there with wearing a hair
Definitely 4 outlets! You can never have enough. I usually wire the
two outlets together on the bench before I put them in the box. This
works well except for the ground. Definitely go with bigger boxes.
Buy good outlets! Not the home center cheapies.
DO NOT FORGET TO WIRE UP SOME 220V OUTLETS ALSO!!!!
It sounds like even though the boxes are only 6' apart that four
receptacles per box is preferred?
It's what I planned for so I guess my first idea was right. Oh well,
it's easier to fix now.
BTW, I get the added pleasure of having to run EMT conduit. What I
could have done in a day with ROMEX is going to end up taking over a
I'm going with "Professional" grade outlets at $2.50 each. The cheap
ones were about $1.25 but they had some real nice ones at $6.50 that
you just shove the stripped wire in the back and tighten it down.
On Mar 2, 11:51 am, email@example.com wrote:
Do you really mean all of the outlets along each wall are on the same
circuit? So if you were working near one wall, and had everything
plugged into outlets along that wall, since the outlets are closest,
they would all be on the same circuit?
I'd suggest putting multiple circuits on each wall. Each set of
outlets on a wall would be on a different circuit. I'd also suggest
putting outlets every 4 feet instead of 6 feet. Use a single outlet
for half of the boxes and double outlets for the other half. I think
having more boxes all along the walls is more useful than having big
boxes in fewer locations. Put the double outlet boxes near the
workbenches of course. On different circuits.
I was originally planning on
On 2 Mar 2007 13:51:52 -0800, " firstname.lastname@example.org"
For a one person shop, isn't that kind of a waste?
When I did mine, I ran dedicated 220v circuits for the DC, for the
compressor, and another tool circuit for the TS, jointer, and planer.
Only one tool at a time is on while the DC is running, and the
compressor won't bother anything.
Next, I ran separate lighting circuits, so a tripped breaker wouldn't
put me in the dark.
For 120v, I ran two 20A circuits, alternated around the shop, and
labeled. The biscuit cutter or router plugs in to circuit A, the Shop
Vac in "B". Alternatively, the HVLP turbine is in A, while the tripod
lights are in A and B.
I also ran dedicated 20A feeds to the stereo area (very important
<G>), the ceiling for air cleaners, and near the door for exhaust
If it's a multi-person shop, please disregard this, but I've NEVER
tripped a breaker in this heavily used setup with one guy.
I've got two separate circuits for lighting.
I don't have anything now that runs off 220 so I figure I'll deal with
that when I need it. One of the nice things about conduit is that it
is real easy to run a circuit later.
No. Simple example. Bench is along one wall. Using the mini lathe
and shop vav. Mini lathe sits on the bench while using it, shop vac
is connected to a large funnel positioned behind the lathe to help get
the sanding dust at the source. All plugged into the outlets along
the one wall. You have two battery chargers sitting on the shelf
beneath the bench plugged into the outlets along that wall. You have
the TV going near the bench so you can hear the game or something, not
watch it while working. You have a two 150 watt incandescent lamps to
cast shadows on the piece you are turning and to help you see. These
are also plugged in right by the bench because you are working by the
bench. And you have one of those ceiling mounted air filters plugged
into the outlets along the bench wall too. Seems to me like you need
Really only one electrical device is runnig at the same time? Look
around and I'll bet you see lots of other electrical devices going at
So you did exactly what I said to do. You ran multiple circuits all
over your shop. In the above sections you have general use circuits A
and B and stereo, air cleaner, and exhaust fan. FIVE circuits. Plus
the 220 circuits for the compressor and the saw/jointer/planer and
dust collector. Two 220 circuits. And you said several lighting
You did exactly what I told you to do. Multiple circuits spaced out
all over the shop.
by all means add 220 outlets as well. i recently purchased a new grizzly
G0568 and was glad i had wired a 10 ga. 30 amp circut in my new shop.
also have 20amp 220 all around the shop for
unisaw etc. do it right while you have the chance you won't regret it
You have plenty of room in a 4x4 for a quad set up. You must be leaving too
much wire out of the box if you're having trouble putting #12 wire into that
box. How much are you leaving outside the box? Are you using the raised
quad covers? They leave you a lot more room in the box since the duplexes
don't sit fully inside the box.
But keep in mind that I've got two wires coming in, two wires between
the outlets and two wires going out. I'm using a 5/8" mud ring. I was
able to get it the first one done, but it's a REAL pain.
Huh. I'm surprised you're having the trouble you are. I stuff that kind of
box like that commonly. Not to sound condescending, but are you getting a
good fold on your wire as you're trying to stuff the box? A good fold is
better than half the secret to making a box do-able instead of a real bear.
You could switch to stranded wire which is easier to work with. Also
consider running a 3 wire circuit so you can put each receptacle in a
box on a different circuit which may save you from running an
extension cord across the shop in the future. If you've got a good
pipe bender you'll get the hang of it pretty quick.
Just remember this - Outlets are like clamps, you can never have too
My shop outlets are quad boxes set on 4 foot centers (and I've occasionally
still run out in high usage spots). They're on 3 wire circuits where every
other quad is on the same circuit. Doing it this way not only saves a little
wire, but I can convert one box to a temporary 240 outlet if I ever need to.
Both duplex outlets in any given box are on the same circuit (I don't want
to take the chance of getting a 240 volt shock between two 120 volt tools
that are plugged into the same box). My boxes are typically mounted at the 4
ft level so they're above benches and floor stuff, but below any possible
future cabinets. I've also put a circuit of them across the ceiling with
hanging cord outlets (just in case). Just remember when you do all this that
you are only allowed by code to have 8 duplex outlets per circuit. Mine are
all protected for 15 amp with #12 wire because I ran special dedicated
circuits for the compressor, table saw, RAS, etc. and only the portable
stuff plugs into the duplexes. I don't believe that bench outlets need more
than 15 amps and I don't like the amount of fire that you can get from a
short on a 20 amp circuit so I never protect them with anything bigger than
a 15 amp breaker, but I do use #12 wire to reduce the voltage drop.
"GeeDubb" < email@example.com> wrote in message
I've found different references to the number of outlets per circuit.
Some say that there are no code limitations on the number of outlets
Here, I found another reference to 13 per circuit.
A few others mention that there is some ambiguity on the subject. When
you add in whether it's a dwelling or not, it gets real confusing.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.