cooler minds prevailed. Waiting on a NEMA L6-20P to C19 cable to be delivered. I need to swap out the outlet from a NEMA 6-30. Does it also need to be a NEMA L6-30 or would a NEMA L6-20 suffice? Does the power cable need to be L6-30 as opposed to L6-20 (the one I ordered)?