Recent content by yennek

using 2005 code, Yes, see 430.6(A)1: "Other than for motors built for low speeds (less than 1200 RPM) or high torques, and for multispeed motors, the values given in Tables 430.247, 430.248, 430.249, and 430.250 shall be used to determine the ampacity of conductors or ampere ratings of...

I just installed this same compressor in my shop, although my cable run was only about 10 ft. Assuming you are in a location where the NEC is used, there are special rules for electric motors. Wire has to be sized to handle 125% of the current draw. So that would be 40amps x 1.25 = 50 amps. 6...