General lighting applications utilizing pole mounted flood lights require different considerations during installation. Factors that should be considered include:
- Mounting Height
- Pole Spacing
- Vertical Aiming
- Horizontal Aiming
The height of the mounted flood light should be one half the distance of the area to be lighted.
Mounting Height = ½ Distance To Be Lighted
Example: If the area to be lighted is 40 feet, the mounting height of the flood light should be at a minimum or 20 feet high.
When more than one pole is being installed in the area, the spacing and placement of the poles become a factor. Spacing between each pole should be 4 times the mounting height of the poles.
Pole Spacing = 4 * Mounting Height
Example: If a flood light is mounted on a 20 foot pole, other poles in the area should be placed 80 feet away.
When aiming a single mounted floodlight, the fixture should be aimed 2/3 the distance of the area to be lighted, and at least 30 degrees below horizontal to avoid any glare.
Vertical Aiming = 2/3 Distance To Be Lighted
Example: If the area to be lighted is 40 feet, the recommended aiming point is 27 feet.
When an additional floodlight is added to a single pole, horizontal aiming becomes a factor that must be considered. Each flood light should follow the Vertical Aiming rule. Each flood light should also be aimed up to 90 degrees apart.