U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

Searching within: All TitlesTitle 49Chapter IIPart 234Subpart D - Subpart D—Maintenance, Inspection, and Testing
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§ 234.221 - Lamp voltage.

The voltage at each lamp shall be maintained at not less than 85 percent of the prescribed rating for the lamp.