Transfer Switch via L14-30 AC output portsKey Points for Using an L14 30 with a transfer switch Understanding the L14 30 Connector L14 30P (Plug): Typically found on the generators output or extension cord (male end). L14 30R (Receptacle): Found on the transfer switch inlet or adapter (female end). Rated for 30 amps at 125 250V, delivering up to ~7,500 watts. For continuous loads, plan around ~5,760 watts per NEC 2023 guidelines and the 80% ampacity rule. Provides split phase power: two 120V