audger - You may be right on the meter, but I don't have a cheapo walmart one for 7.99
Mine was probably more like a whopping $30-40 one if I remember right! ha
I tested mine before running with and without the element hooked up and still got 238v under a load. But that might be the meter.
Either way I know I am a quasi jackass for running it on the DC now. I have two ac out SSRs hanging out in my spare parts for my control panel. I will probably swap it out this coming weekend or next when I finish building my last pot for my system. I would like to baseline my setup and recalibrate my temp probes once I get everything up and running, and autotune, all at once. Seems like if I ever have enough time to test the system that means I have time to brew - you can guess which I end up doing over the other.
I temped my heat sink at 190F, even though it was rated for 40amps. Shortly after I put in a fan that blows across the fins and vents through the back, that seems to keep the heat down pretty good, though I haven't temped the sink with the fan on, because the way I mounted it requires the box to be closed (tapped in some brews on the top half of an auberins lid). But I can very comfortably touch the bottom of the box and feel warm, but not hot from the ssr. Before it was hot.