U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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All TitlesTitle 49Chapter IIPart 229Subpart C - Subpart C—Safety Requirements
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All doors, cover plates, or barriers providing direct access to high voltage equipment shall be marked “Danger-High Voltage” or with the word “Danger” and the normal voltage carried by the parts so protected.
