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sparkjumper
Just a remark about what Pharma said.I've run 3 1K HPS on a 240V circuit using 120V receptacles and the original cordcaps from the fixture for many years now its perfectly safe.Just don't plug a 120V appliance into it,that is the one and only drawbackEDIT I see you are only running 2 1K's so all you'd need is a 120V duplex receptacle in a single gang box.I'run three so I had to use a 4 sq. metal box and two duplex receptacles