At our studio we have a NEMA 14-30R outlet used for our kiln. When not in use, we want to use another piece of equipment that has an L6-30P plug. I believe the equipment is rated at 8AMP 240V.
I built an adapter that has a 14-30P on one end and an L6-30R on the other, capping the neutral inside the L6-30R. In this way we can switch from one piece of equipment to the other without running a new line, guaranteeing mutually exclusive use of the circuit.
Is this configuration safe? Would I be better off pulling off the neutral pin from the 14-30P? Right now I just want to make sure no one is going to hurt themselves until we can find an appropriate solution although running a new circuit is not an option - maybe sub-panel with a switch between two outlets?