One of the reasons for going with the high mast system is the fact that we have so much heavy equipment. He added that the reason the Holophane system was selected was primarily due to the lowering device. I had successfully installed the Holophane system in the past and sold this facility on the idea of using the high mast units. The Holophane system is serviced by bringing a winch motor on a pickup truck to each pole. Luminaires lower to within three feet of the pole base, allowing for lamps to be replaced and other maintenance to take place at ground level.
All electrical connections are also accessible for easy maintenance.
Lighting systems at some other Port Authority terminals are comprised of fixed poles with horizontal arms supporting the lamps. Each pole has 18 lamps, compared to the 16 lamps installed on the Holophane poles. Frankly, energy was not a major consideration when we started this project. Illumination levels are five to 10 footcandles maintained. At the older facilities, we have a puddle of light around each pole.