Assuming you have 20A breakers and #12 or larger copper, you want NEMA
6-20. See this link.
https://en.wikipedia.org/wiki/NEMA_connector
73, Jim
On Mon,7/11/2016 2:43 PM, Matt Murphy wrote:
Jim --
Ahh, I think that would work. If the conduit works as ground (which I
think it does here) I could use the kind pictured in the link below,
and wire up a the power cable using the two hots and ground as you
recommend:
http://waterheatertimer.org/images/240-Volt-outlet4-253.jpg
73,
Matt NQ6N
On Mon, Jul 11, 2016 at 4:21 PM, Jim Brown <[email protected]
<mailto:[email protected]>> wrote:
On Mon,7/11/2016 2:07 PM, Matt Murphy wrote:
I am guessing that installing a grounded 240V receptacle and
using the conduit as ground is *not* up to code.
It depends on the building code used by local jurisdiction. In
many jurisdictions, it IS legal to use conduit as the green wire
IF it is continuous and all the connections are made properly. As
I recall, it's legal in Chicago, where steel conduit is used for
almost everything, in large part to keep union electricians working.
In other jurisdictions, or if the conduit is not properly bonded
for the entire length, a dedicated green wire must be run.
If it were, then perhaps I could install a NEMA 6-30
receptacle (which has a ground pin and two hots).
I don't know connectors by number, but what I would install is a
standard outlet with two hots and ground that is slightly larger
than an ordinary 120V outlet. Or even two outlets in the same
steel backbox, like a 120V duplex.
73, Jim K9YC
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