The average dimensions of a pool table light fixture are between 35 and 110 inches long, with three to five lights per unit. The most commonly purchased light fixtures are three-shade units that use 100- to 150-watt light bulbs or floodlights and measure between 51 and 55 inches in length.
Most billiard or pool tables measure between 7 and 10 feet long. Generally, a pool table light should have at least one bulb for every 2 to 3 feet of playing space. Billiard lights are typically hung within 31 to 33 inches from the top of the pool table playing surface for optimal lighting and minimal shadows.