Those of you heating water with your turbines...what elements are you using? After fishing around the popular vendors' "48v" elements it turns out most of them are generic 120v or 240v elements that cost <$20 at lowes and they're only good for about 48v. I need to burn off about 2000w at 65~70v and am struggling to find a suitable element I can use that's not something you have to order from China.