46 CFR §111.15-30
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Each battery charger enclosure must meet § 111.01-9. Additionally, each charger must be suitable for the size and type of battery installation that it serves. Chargers incorporating grounded autotransformers must not be used. Except for converters, chargers with a voltage exceeding 20 percent of the line voltage must be provided with automatic protection against reversal of current.