Update for those interested... this morning's electrician came out, pulled the panel off, and immediately spotted that the inbound line (service --> board 1 --> this board, board 2) was not tightened and arcing under high load. Nothing to do with the HWPC at all beyond the fact that 40A load got the terminal hot enough to smoke. Unbelievable that the guy yesterday missed it.
Sure explains the smoke. Oh, and the service line to the HWPC was at a comfy 42A when the car was set to 40A. The dinosaur I got yesterday might be ready for retirement...
Sure explains the smoke. Oh, and the service line to the HWPC was at a comfy 42A when the car was set to 40A. The dinosaur I got yesterday might be ready for retirement...