What a great response, thank you. More searching seems to prove out that 2/0 is fine for the interconnects but 4/0 is required for the battery to inverter and disconnect. I'm going to check with local suppliers just to get an idea on costs. Who knows, maybe pre-made will be the best. Anyone who has purchased battery supplies from a particular company with good service and reasonable pricing I would sure appreciate the contact information. Thank you again to all, Bonz (you've got mail)  Dave B.

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