Light Strings - Voltec’s wide variety of light strings are the perfect solution to your temporary lighting needs at locations such as construction sites, parking lots, marinas and tree lots. Light strings are available in 50 or 100 ft lengths and are made with heavy-duty molded 150 watt sockets, which are spaced every ten feet. All of our light strings have pre-assembled plastic or metal cages which saves you time, as well as the cost of installation.