50-Foot 30 Amp Heavy Duty Lighted RV Extension Cord w/Pro Grip Handles - Your Name Printed on Cord An amber neon lamp in the clear TT-30 plug indicates whether there is power in the circuit. A green ground check light in the clear TT-30 connector indicates there is continuity in the ground wire throughout the cord. If the green neon light inside the clear connector is not lit, there has been a loss of ground continuity. Our patented Pro Grip handles are built into both plug and connector ends to help pull out the cord ends from outlets or other cord extensions. Handles conveniently slide out of the way when not in use. Manufactured to 10/3 AWG (American Wire Gauge) specifications. Each of the 3 conductors contains 104 strands of 30 gauge 100% copper wire. Cable Markings: 10/3 STW FOR RECREATIONAL VEHICLE USE 30 AMPERES