What square gauge should be selected for commonly used charging pile cables?

China [CN]

Charging pile cable specifications should be selected based on power, wiring distance, and voltage type. The key is to match current carrying capacity and minimize voltage drop.

For household 7kW single-phase AC charging piles, which are the mainstream, a 6-square-meter copper core cable can meet 32A current requirements for distances up to 50 meters. For distances between 50-100 meters, upgrade to 10-square-meter cable, and for distances over 100 meters, use 16-square-meter cable. For 3.5kW portable charging piles, a 4-square-meter cable is sufficient for distances up to 60 meters. For short-distance emergency use, a 4-square-meter cable can also be used within 10 meters, but long-term use is not recommended.

Public fast-charging stations have higher specifications: 11kW three-phase stations use 5×6 square five-core cable for distances up to 80 meters, and 5×10 square for distances exceeding 80 meters; 21kW stations use 5×10 square for distances up to 100 meters, and 5×16 square for distances exceeding 100 meters; 60kW DC stations require 25-35 square cables, while 120kW and above require 70 square or more cables, or even double-stranded cables. When running through conduit, in high-temperature environments, or over long distances, the wire diameter needs to be increased, and national standard pure copper wire must be used for safety.

Of course, for specific cable parameters based on the actual application specifications, please contact a professional cable engineer for consultation. OMG Cable Manufacturer offers customized solutions. For product inquiries about new energy charging station cables and in-vehicle high-voltage cables, please visit: https://www.omigr.com