Ampacity versus conductor area for copper power cables with 90°C insulation, at 30°C ambient temperaute. The American Boat and Yacht Council E-11 data I found at Blue Sea (marine small craft, DC). The JASO D609 data are from the manufacturer Tycab (automotive, DC). The ISO 10133 data I found at Energy Solutions LINK (marine small craft, < 50 VDC). The NFPA 70 NEC 2014 data are from Wikipedia (AC, ≤ 3 conductors). The AS/NZS 3008 data are from the manufacturer Olex (single-phase AC, single conductor).