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My journeyman told me to always use aluminum paste on 4/0 feeders, and I'm glad I didn't listen
He swore by it for years, but when we had to redo a whole apartment complex in Tampa last month, the inspector flagged every connection for excess paste. Turns out the new code just wants a light coat of oxide inhibitor, not that thick goop. Has anyone else run into this with the 2023 NEC changes?
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