The slotted PVC cable trunking,named wiring duct or wire duct, cable duct and so on, it is full insulated to protecting the cables from breaking of mouce,it also makes the cables in line in the panels, which will let the panels looks more pretty.The cable trunking has to be withstand high temperature around 50 ℃ when the panels are working, there will be some other equipment help to low the temperature, such as the inside fans.