I have two electric furnaces that I've used for temporary heat in houses I was building. One is 20kw and has 25' of baloney cord - $150. The other is 15kw with 15' of baloney cord - $125. Both come with Cutler Hammer breakers, but you can switch them out for whatever brand you want. I just pull the cover off the panel, plug them in and connect the ground. Text me if you're interested 5oh9-six79-1too31.