The second process diagram on the first page shows the gist, but for the sake of clarity, I'm using the BK as the HLT, so only one vessel in my setup will be heated with an element. However, that vessel is 1.5bbl, so I need more than one element. From reading around, apparently it's doable with 2 5500k elements. Power is 240V 50A. Definitely want GFCI protection. Thanks! Let me know if I can clarify anything.