The PHL elevated lights mark the FATO perimeter of a heliport. The FAA recommended perimeter color is green. The purpose of the PHL’s halogen floodlight is to provide a cone of light "washing" the pad surface to provide better depth perception to the p
ilot than simply having perimeter lights. It improves conspicuity to the pilot but does not provide even illumination of the pad surface that may be required for other reasons. The colored perimeter light and the halogen floodlight may be separately circuited if
independent control is required.Note: Ground wires are included .