{"data":{"id":"us/47-cfr-17.54","jurisdiction":"us","citation":"47 CFR 17.54","heading":"Rated lamp voltage.","body":"To insure the necessary lumen output by obstruction lights, the rated voltage of incandescent lamps used shall correspond to be within 3 percent higher than the voltage across the lamp socket during the normal hours of operation.","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER A—GENERAL","PART 17—CONSTRUCTION, MARKING, AND LIGHTING OF ANTENNA STRUCTURES","Subpart C—Specifications for Obstruction Marking and Lighting of Antenna Structures"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-47.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:28Z","sha256":"97cc8535a59e1370f6809dcfe321813ada1d3cdb106c6ef1142ec86a7dea6313","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-17.53","next":"us/47-cfr-17.56"},"notice":"GroundRules: Original legal text. Not legal advice."}