Cable ladders are ideal to install large volumes of heavy duty power cables. The long rung spacing means full free air rating of cables. Higher current flow can be achieved at the same cable cross-section. Overheating and consequent damaging of cables is avoided. The new shape of the side rail allows higher cable loads at similar support spans; the continuous perforation in the siderails guarantees easy mounting of fittings. Cables can be installed and fixed to the rungs using appropriate yoke clamps. Niedax Cable Ladders can be slit together to minimize transport and storage volume needs.