Nema L14-30P/Four 5-20R, 4 Prong 10 Gauge Flexible Generator Cable, Generator ??4 Prong 10 Gauge Cable,NEMA L14-30P/Four 5-20R 30Amp 7500 Watts 125/250 Volts ??Heavy Duty The Big Gauge And Pure Copper Can Avoid ,The Cable Getting Overheating From Long -Time Use.Larger Gauge Wiring Is Well Built To Give You Peace Of Mind When Running Higher Amp Loads. This Cord Can Be Used To Run Any Circuit In Your Breaker Panel Up To 30A.It Is A Useful And Reliable Emergency Extension Cord For Your Generator ??Weather And Fire Resistance,This Generator Cable Can Be Used Indoor/Outdoor For All Weather And All Season.We Choose The Good Quality Of 105? PVC With The FT-1 Level Fire Resistance.And Pure Copper(5.26mm) Which Will Not Let The Cable Get Heat During The Operation Time ??Twist Locking Design, The Plugs Was Design With The Lock Structure.When The Plug Is Inserted And Twisted To Lock Place,It Will Not Slipping From The Generator Socket Due To Wind, Hurricane,Big Rain, Snow, This Is The Best Extension Cord For Your Generator To Connect With Home Appliance And Electric Power Tools