A PV panel wire cover assembly includes an elongate wire cover and a plate coupler, the assembly used with a PV panel having perimeter trim with a leg spaced apart from the PV panel to define a gap therebetween. The leg of the perimeter trim has a perimeter trim thickness. The wire cover has first and second opposite sides and a first flange extending from the first side with a slot formed therein. The plate coupler includes a fastener and a plate having proximal portion and a distal portion, the distal portion sized for receipt within the gap. The fastener passes through the slot and has first and second portions engaging the first flange and the proximal portion of the plate respectively. The wire cover can be fastened to the perimeter trim of the PV panel through the plate coupler without penetrating the PV panel.