Section 169.672 - Wiring for power and lighting circuits(a) Wiring for power and lighting circuits must have copper conductors, of 14 AWG or larger, and-(1) Meet Article 310-8 and Table 310-13 of the National Electrical Code;(2) Be listed as "50 volt boat cable"; or(3) Meet subpart 111.60 of this chapter.(b) Wiring for power and lighting circuits on new vessels must have stranded conductors.(c) Conductors must be sized so that-(1) They are adequate for the loads carried; and(2) The voltage drop at the load terminals is not more than 10 percent.