Ampacity Chart For kcmil Aluminum Wires (2st Chart) Aluminum kcmil or MCM Wire Size:Ampacity At 60°C (140°F):Ampacity At 75°C (167°F):Ampacity At 90°C (194°F):Max. Allowable Amps (75°C): 250 kcmil170 Amps205 Amps230 Amps164 Amps ...