I forgot to add the 2AWG cable as suggested by the author may offer superior mechanical strength of both conductor and cable lugs. Such circular mil x length would offer near zero advantage over 4AWG and only minor advantage over 6AWG. Cable lengths are too short to enter into the equation. But mechanical strength is in it's own world as far as relevance.
I notice with my Meanwells, Megawatts and Cheapos, a slight variance with positively stable reference resistance. i.e. .05 to .08 drift*. By guesswork I attribute this to the cheap circuit board potentiometer. Tap it with the blunt end of a screwdriver and watch voltage reaction. I would have hoped the high end power RSP units will have a multi-turn pot on the circuit board.
*From day-to-day
