Heavy duty L14-30R locking plug, 3 pole 4 wire grounding type, 125/250V, for use with 10 gauge wire, suitable for generators up to 7,500W, with 30A socket. There are rubber grommet inside to provide moisture and dustproof protection for wires of different sizes. The contacts are in a plastic housing, eliminating the need to wrap wires around screws, just slide each wire into a separate tube and tighten, preventing shorts or stringing. Screws secure the stress relief part, locking the generator firmly to prevent it from loosening and falling off. The copper parts with good conductivity and the nylon base structure are durable and reliable in use. Repair/Replace Broken Generator Plug, Heavy Duty Industrial Grade L14-30 Female Plug, Designed to Handle 30 Amp, 10 Wire Gauge, 3 Pole, 4 Wire, 125/250 Volt Power Cord, Replacement Generator/Transfer Switch/ Worn plugs on welders/RVs/trailers/campers. Current: 30A Wire size: 10AWG Size: about 10 x 5.5 x 5.5 cm Socket type: locking socket Rated voltage:AC125V Rated voltage:AC125V Number of poles: 3P+E Protection function: IP22 3Rated voltage range: above 50V and 440V Number of holes: 1 Product Series: American surface-mounted socket Number of jacks: four Rated power:5000W Rated frequency:50Hz/60Hz Working temperature: -40~125 Flame retardant grade: V0 Color: black+white Material: Nylon+PBT Package Contents: 1 plug connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.