The alternative on a standard duplex box is where the "blades" are at right
angles to the normal outlet.. Therefore never allowing a misconnection.
Mel, K6KBE
From: Jim Brown <j...@audiosystemsgroup.com>
To: Reflector Elecraft <elecraft@mailman.qth.net>
Sent: Monday, July 11, 2016 2:21 PM
Subject: Re: [Elecraft] quick question about antennas
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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