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Conductors, Branch Circuits & Voltage Drop

EMT Conduit Fill Calculation: Four 350 kcmil Conductors and a Bonding Wire

A cross-section of 2-1/2 in. EMT holding four 350 kcmil THHN conductors and a 4 AWG bonding conductor. Total conductor area of 2.1792 in² against a 5.858 in² conduit gives 37.2% fill, within the 40% limit, with the table and calculation shown.

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