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View Full Version : Wire size required from 200 amp main to 100 amp sub panel

Rick Kelly
Jul 26, 2012, 04:37 PM
The sub panel is located @75 feet from main panel.
tkrussell
Jul 27, 2012, 02:37 AM
Check with local inspector. Should use #1 aluminum, assuming a SER cable. Local inspector may allow #2 aluminum, which is very common.