Have a 480/277Y panel however the neutral is unused. The panel input is three wire plus ground from a delta to wye transformer, the neutral is bonded to ground at the transformer.
So what would you install as a receptical off this panel, a L16-20 or an L19-20. My thinking is the L16 as the neutral doesn't exist.
So what would you install as a receptical off this panel, a L16-20 or an L19-20. My thinking is the L16 as the neutral doesn't exist.