[ATTACH=CONFIG]675[/ATTACH]I see that there is some interest on this heater control...I myself am making this controller I have a drawing in another thread but I will list it here also...The drawing shows it in the 220v but it can be used for 120v..if you are interested i could make a drawing for that also...but with mine I'm using this for one 5500 element....I'm using a double pole switch so you don't have to unplug it and with a indacator light to let you know its on...the T block or just wire nut them together instead. The SSR sits right in the cutout that is in the middle of a LARGE heatsink that is square. I'm also putting a volt meter inline to watch what it is drawing or close to the temp...I'm also installing a 3" fan for extra cooling with it drawing the heat out of your box. and as for the potienmeter as Scotty mentioned Ohm's Law for P to make sure you have the right one...[ATTACH=CONFIG]672[/ATTACH]