A Guide to the 2023 National Electrical Safety Code
Cars That Think
JULY 12, 2022
Rules 234 B1, C1, D1 were revised to better present vertical and horizontal wind clearances, and to coordinate requirements with the new Table 234-7. Table 410-4 is based on the latest arc flash testing on live-front transformers. Rule 120A was revised to provide correction factors for clearances on higher elevations.
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