Prime LSUGM830 12/3 SJTW Temporary Light Strip with Metal Cages, 50-Feet Sockets use standard Type "A" 150-Watt bulbs - spaced in 10-Feet intervals Vinyl coated metal bulb guards protect the light bulbs Extra-heavy duty wire is flexible from 40-Fahrenheit up to 140-Fahrenheit Cord is water, weather, abrasion and flame retardant Sockets have holes at the top for easy hanging over a jobsite