1

For installation of a Tesla Gen 3 EVSE the manual requires the terminal screws be tightened to 50 lbf.in torque and recommends wire from #12-#4 gauge with #6 gauge wire used for a maximum possible charge.

Since wire with a smaller diameter than #6 gauge wire can be used, especially for the grounding conductor, can someone speak to a recommended adjusted torque value as to not damage/crush the smaller gauge wire that might occur when 50 lbf.in torque is applied. For example, the circuit breaker torque recommendations vary based on wire size and #8 gauge wire and smaller require lower torque settings than #4 and #6 gauge wire.

stan li
  • 11
  • 1

1 Answers1

7

It's a UL listed device. When installing a UL listed device, the instructions in the manual are the ones you follow. The instructions say torque to 5.6Nm, so you torque to 5.6Nm. Don't second-guess the engineers who designed the unit or the ones who certified the EVSE. Torque the connections to 5.6Nm.

KMJ
  • 12,940
  • 15
  • 46