CFR › Title 46 › Part 111 › §111.05-1546 CFR §111.05-15Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Each propulsion, power, lighting, or distribution system having a neutral bus or conductor must have the neutral grounded.(b)The neutral of a dual-voltage system must be solidly grounded at the generator switchboard.