Southwire 7549SW Temporary Lighting, 100-Foot Cord with 10 Sockets and Plastic Lamp Guards, 3-Prong Plugs (5-15P). Durable, indoor/outdoor lighting systems accommodate Standard (A-23) bulbs up to 150 Watts. They feature a lamp socket every 10 feet. This lighting system is our most rugged and heavy-duty. It features a 12/3 AWG cord. The cable is made in yellow for high visibility and rated to 300 volts. The Plug is rated to 15 Amps, and is the standard shape (5-15R). It also has an outlet (receptacle) on the end to interconnect more than one set. The plastic lamp guards snap on easily. These have many uses: For concerts, parties, outdoor events, construction lighting and commercial lighting. Many people call them string lights.