I'm installing a wall outlet 25 feet from the breaker box and wonder if #8 copper wire is sufficient to avoid a large voltage drop causing the charger to drop below 29 amps/hr. I read the charger senses voltage and if too low, reduces charging power significantly to avoid heating conductors. 40 amps through 50 ft (25 ft x 2 wires) produces a 1.24V drop at room temperature per common resistance tables. I prefer #8 over #6 because it's easier to install and lower cost. Will I get maximum charging with #8 wire?