These commercial-quality strands are the simplest way to illuminate a large outdoor space and shed a soft light over after-dark gatherings.??? They are made to replicate the light strings illuminating world piazzas for late night strolls.??? These are great for lighting interiors; building outlines; patio lighting; gazebos; parks or any other permanent lighting needs.??? The 50-foot long all black string lighting comes with 15 weatherproof light sockets approximately 30-inch apart.??? The molded rubber sockets are protected by 7-1/2-inch wide galvanized shades.??? Maximum wattage per socket is 150 watts (bulbs not included) with a total maximum wattage of 1875.