12 Volt - Electric Automotive Wiring
Maximum wire lengths vs. currents in the 12 volt electrical system of a car.
Current loads and maximum wire lengths in 12V electric systems are indicated in the diagrams below.
print 12V Automotive Electric Wiring Chart
- 1 ft (foot) = 0.3048 m
Current load - amps - and maximum wire length is based on maximum 0.5 volt voltage drop over the length of the wire.