A TwistLock® or TurnLoc® connector used on most professional moving lights.
The designation comes from NEMA, and indicates a locking, 250V max. connector, rated at 20A, and having two hots and a ground.
For a colorful poster of almost all NEMA connectors, see attached PDF View attachment PassSeymour_NEMA_Chart_COUNTERMAT_.pdfhttp://www.passandseymour.com/literature/pdf/2006_NEMA_Chart_Countermat_101107.pdf, courtesy of Pass & Seymour/LeGrand.
The designation comes from NEMA, and indicates a locking, 250V max. connector, rated at 20A, and having two hots and a ground.
For a colorful poster of almost all NEMA connectors, see attached PDF View attachment PassSeymour_NEMA_Chart_COUNTERMAT_.pdfhttp://www.passandseymour.com/literature/pdf/2006_NEMA_Chart_Countermat_101107.pdf, courtesy of Pass & Seymour/LeGrand.
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