A wire management duct having is provided with a wire channel along the length of the duct. In an embodiment, the duct is further comprising a mounting lip to mount the duct onto a mounting rail of photovoltaic array mounting rail system. In another embodiment, a wire management system is comprised of one or more wire management ducts which may be mounted parallel to the mounting rails of photovoltaic array mounting rail system or perpendicular to the rails using an attachment clip. In a further embodiment, mounting clips are provided to attach the wire management ducts directly to the frame of a photovoltaic module.