CFR › Title 33 › Part 183 › §183.43033 CFR §183.430Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Each conductor in a circuit that has a nominal voltage of less than 50 volts must:(1)Meet the requirements of § 183.435; or(2)Meet:(i)The insulating material temperature rating requirements of SAE Standard J378; and(ii)SAE Standard J1127, or SAE Standard 1128.(b)This section does not apply to communication systems; electronic navigation equipment; resistance conductors that control circuit amperage; and pigtails of less than seven inches of exposed length.