Weatherproof an extension cord - Tommy Tape Self-Fusing Silicone
Amazon.com: HUANCHAIN 250 ft Outdoor Extension Cord Waterproof 12/3 Gauge Heavy Duty with Lighted end, Flexible Cold-Resistant 3 Prong Electric Cord Outside, 15Amp 1875W 12AWG SJTW, Yellow, ETL : Tools & Home Improvement
Outdoor Extension Cord with On/Off Waterproof Switch 3 Prong Extension Cord w/ Cord Switch, Heavy Duty Extension Cord 125v/250v - Bed Bath & Beyond - 39768074
Twist and Seal Cord Protect Outdoor Extension Cord Cover and Plug Protection, Green TSCP-G-1000 - The Home Depot
14/3 Gauge Black Outdoor Extension Cord 200 ft Waterproof with Lighted Indicator, Cold Weatherproof -40°C, Flexible 3 Prong Long Extension Cord Outside,13A 1625W 14AWG SJTW, ETL Listed PlugSaf - Yahoo Shopping
Outdoor Waterproof Electrical Boxes for Extension Cords from ACF Greenhouses
12/3 Outdoor Extension Cord with Multi Outlets, Heavy Duty Flexible Waterproof Power Extension Cable Cords with 3 Prong Grounded Plug for Safety, 15AMP 12AWG 1875W SJTW UL Listed (3 FT) - Newegg.com