The cable compartments are placed at the lower end of the switchboard and segregated from each other and from the other parts with the voltage, respecting the 4B construction form. After opening the rear door can be accessed to the cable compartment where are placed the auxiliary terminal fixed to the structure of the switchboard.

Each functional unit has its own cubicle for power cables, arranged by copper bars to connect the cables and closed by a plate that allows the accessibility to the board, even in service, ensuring operator safety