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Used Square D Bus Duct/Busway/Busbar

Overview

Bus duct (busway, busbar) systems are prefabricated electrical distribution assemblies that carry large currents between switchgear, transformers, and distribution panels. Housed in metal enclosures, they use rigid copper or aluminum conductors in modular sections to save space, simplify installation, and improve thermal performance compared to cable runs. Common in industrial plants, data centers, and commercial buildings, busways offer flexible layouts, easy extension, and straightforward access for maintenance or upgrades.

FAQ

What should I check when buying a used bus duct?

Verify ampacity, voltage, phase configuration, conductor material (copper vs aluminum), section lengths, joint condition, certifications (UL/IEC), and compatibility with your switchgear. Ask for test records and photos of connections and insulators.

How do I arrange safe shipping for long busway sections?

Use a heavy-equipment carrier experienced with long loads. Protect ends and bussing, brace sections to prevent bending, weatherproof exposed insulation, and plan for permits, escort vehicles, and proper rigging for loading and unloading.

What maintenance does a busbar system need after installation?

Perform regular visual inspections, torque checks on bolted joints, infrared thermography to spot hot spots, insulation resistance testing, and clean corrosion or oxidation. Keep records and follow manufacturer intervals for inspections and retorqueing.