I need to run a 20 amp 240V line to the garage for the new 1023SL. I
have wiring experience having finished my basement and run numerous
circuits for lighting, outlets, etc. Wiring for 240 doesnt look any
more difficult than 120, just more wires correct? I need to purchase a
plug for the saw and a matching outlet along with breakers. What about
the wire? With a 20 amp circuit do I pull two 12g wires or is there a
dedicated insulated wire with four leads?
Matt
On May 22, 4:11 pm, "Swingman" <[email protected]> wrote:
> "Matt" wrote in message
> > I need to run a 20 amp 240V line to the garage for the new 1023SL. I
> > have wiring experience having finished my basement and run numerous
> > circuits for lighting, outlets, etc. Wiring for 240 doesnt look any
> > more difficult than 120, just more wires correct? I need to purchase a
> > plug for the saw and a matching outlet along with breakers. What about
> > the wire? With a 20 amp circuit do I pull two 12g wires or is there a
> > dedicated insulated wire with four leads?
>
> What Chris said...
>
> That said, I prefer to pull 10/2 when installing 220 circuits in the shop
> ... that way if I want to upgrade that circuit for another tool, the wire is
> already there.
>
> One other thing to watch for: if your panel/sub-panel takes half height
> breakers, make sure that you use a slot for the 220 c'brkr that spans both
> hot legs ... you'd be surprised how many electrician's fail to do that on
> occasion. ;)
>
> --www.e-woodshop.net
> Last update: 2/20/07
> KarlC@ (the obvious)
Can you explain what you mean regarding the slot for the brkr that
spans both hot legs? I was going to duplicate the wiring for the dryer
and range.
Matt
Matt wrote:
> I need to run a 20 amp 240V line to the garage for the new 1023SL. I
> have wiring experience having finished my basement and run numerous
> circuits for lighting, outlets, etc. Wiring for 240 doesnt look any
> more difficult than 120, just more wires correct? I need to purchase a
> plug for the saw and a matching outlet along with breakers. What about
> the wire? With a 20 amp circuit do I pull two 12g wires or is there a
> dedicated insulated wire with four leads?
You don't need more wires. For pure 240V circuits you have two hots and
a ground, no neutral.
Assuming 20A is enough, then you just need to run standard 12-2 romex.
I'd suggest NEMA 6-20 receptacles (which can take both 15A and 20A
plugs), and a 6-20 plug. If you want to get fancy you could use the
twist-lock versions of the above.
I'm a bit uncertain about whether 20A is sufficient though...the manual
says the motor is rated at 18A, which would normally require more than a
20A breaker. Someone with more electrical code knowledge should pipe up
here.
Chris
"Matt" wrote in message
> I need to run a 20 amp 240V line to the garage for the new 1023SL. I
> have wiring experience having finished my basement and run numerous
> circuits for lighting, outlets, etc. Wiring for 240 doesnt look any
> more difficult than 120, just more wires correct? I need to purchase a
> plug for the saw and a matching outlet along with breakers. What about
> the wire? With a 20 amp circuit do I pull two 12g wires or is there a
> dedicated insulated wire with four leads?
What Chris said...
That said, I prefer to pull 10/2 when installing 220 circuits in the shop
... that way if I want to upgrade that circuit for another tool, the wire is
already there.
One other thing to watch for: if your panel/sub-panel takes half height
breakers, make sure that you use a slot for the 220 c'brkr that spans both
hot legs ... you'd be surprised how many electrician's fail to do that on
occasion. ;)
--
www.e-woodshop.net
Last update: 2/20/07
KarlC@ (the obvious)
"Chris Friesen" <[email protected]> wrote in message
news:[email protected]...
> You don't need more wires. For pure 240V circuits you have two hots and a
> ground, no neutral.
>
> Assuming 20A is enough, then you just need to run standard 12-2 romex. I'd
> suggest NEMA 6-20 receptacles (which can take both 15A and 20A plugs), and
> a 6-20 plug. If you want to get fancy you could use the twist-lock
> versions of the above.
>
> I'm a bit uncertain about whether 20A is sufficient though...the manual
> says the motor is rated at 18A, which would normally require more than a
> 20A breaker. Someone with more electrical code knowledge should pipe up
> here.
>
> Chris
What Chris said regarding the wiring. Regarding the breaker, you are
correct, it is a 20A per the instruction manual. I too thought that might
be a bit small but I have yet to trip mine.
Cheers,
cc
In article <[email protected]>, Matt <[email protected]> wrote:
>Can you explain what you mean regarding the slot for the brkr that
>spans both hot legs? I was going to duplicate the wiring for the dryer
>and range.
The best way for you to understand that is to go to your favorite hardware
store or home center, and take a look at one of the breaker boxes on display,
that doesn't have any breakers in it. You'll see immediately.
--
Regards,
Doug Miller (alphageek at milmac dot com)
It's time to throw all their damned tea in the harbor again.