If you have only three wires (Black, Red & White) you should use the Black &
Red for your Hot leads (interchangeable) and the white as the ground.
Running a 220v piece of equipment without grounding it is dangerous. I
recommend using green tape or colored marker to change the end of the white
wire green so in the future others will know it is a ground.

If you have a 200v machine that has a 110v light or other 110v accessory,
you will need a 4th wire (black, red, white & green or bare). The white and
one of the hot leads is for the 110v load and the green/bare is to ground
the machine.

Be careful.

"Josh" wrote in message
oups.com...
rich wrote:
Hi, All,

Today I just put in the conduit and wiring for my table saw due to
arrive in a day or so. I have 4 outlets along the wall, chest high,
5-6 feet between each box. My question is how to hook up the wires in
the main box. I have a separate 200 amp box for the garage/shop.

Inside are 2 empty ganged circuit breakers, unused, in addition to
the 120VAC breakers. They used to run a compressor and a welder per
the previous owner. The ganged circuit breakers have a screw on each
one to connect the wire. For 220VAC, do I run the two "hot" wires to
each one of the screws? The neutral, white, goes to the ground strip,
I could find that easily. And does it matter red/black wires, which
goes to which part of the socket? (except the neutral/ground).

And, if I had a good meter, I would use it, but I'm at my
"summer"house where this is all happening. And 1700 miles is too far
to go back and pick it up!

Thanks to all for any help!

Regards,

Rich.....

Your assumptions are correct. Red and black are interchangable with
respect to which side of the socket or which of the poles of the
circuit breaker they connect to. Just connect one to each of the two
screws on one of the ganged breakers, like you said. For a tablesaw
the white wire is probably not going to be used and doesn't need to
connect to the socket in any way. I'd just coil it up in the box
behind the socket and stick a wire nut on the end.

By the way, you said there are four outlets. Are these all 240V or
some 120V as well? If mixed, did you run a separate wire or wires for
the 120V outlets so they can be on their own circuit(s), or are you
planning to piggyback onto the 220V? If so, you'll need the neutral
for those recepticles.

Josh