An L6-30 plug is considered:

In the NEMA wiring device naming convention, the 'L' prefix stands for locking, meaning the plug uses a twist-and-lock mechanism to secure the connection and prevent accidental disconnection under load. The L6-30 is specifically a 250V, 30A locking connector commonly used for data center PDUs and high-draw server equipment.

Molex is a brand name for a family of internal connector systems used inside computers for power and data, not a classification for wall or PDU power plugs.

The L6-30 is a single-phase connector with two hots and a ground; three-phase connectors carry a different NEMA designation such as the L15 or L21 series.

An Edison outlet refers to the standard NEMA 5-15 household receptacle (120V, 15A) and does not apply to the L6-30, which operates at 250V.