Light poles should be of sufficient height to properly disperse light without too much dissipation. Ideally, this means between 15 to 20 feet high for most light pole installations. Equally important as height is the type of bulb. You will want a bulb that will deliver an illumination level of between 1- to 5-foot candles to ensure sufficient illumination for safe passage through the parking lot. Anything higher is blinding, and anything lower is simply insufficient to illuminate the area.