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Conductors, Branch Circuits & Voltage Drop

Parallel Raceways in a Concrete-Encased Duct Bank: Copper vs. Aluminum

A section of two parallel 480 V raceways in a concrete-encased duct bank, comparing 350 kcmil copper with 500 kcmil aluminum for a 600 A feeder, with the duct dimensions, cover, installation notes and a dimension table.

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