I like this chart but still I don't know what AWG is used for 400A : r/electricians
310.12 Single-Phase Dwelling Services and Feeders.
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310.15(B)(7) 120/240-Volt, Single-Phase Dwelling Services and Feeders.
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SECTION 3
400 Amp Service with Two 200 Amp Disconnects...Is my Grounding across Meter & Disconnects Adequate? | DIY Home Improvement Forum
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On a 400 amp service. What size wire do you need for grounding the ground rod to sub panel?
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Underground Electrical Service Cable Sizes & Amps Q&A
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Residential Electrical Service Grounding Requirements
Welding Cable Size Guide: Charts & Tips for the Right Choice
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Amplifier wire gauge chart
