TL;DR: Basic wireway systems cost $8-15 per linear foot, while heavy-duty cable tray installations range from $12-25 per foot including materials and basic installation. The upfront cost of purchasing the cable management system itself. Cable trays are vital in electrical installations, providing secure pathways for power, communication, and control cables across residential, commercial, and. Although cable tray systems usually represent a small portion of the total electrical scope, incorrect material selection, late design changes, or fragmented purchasing can significantly increase overall project costs. 2 Why is Conduit So Expensive? 8. 3 What is the Best Way to Save Money? The selection of the method.