Jerry - I use 2 - 2000i's to get ample power. You need about 20 Amps to run your AC. One 2000i is 13.3 Amps. I've used them now for two years and am very happy. I have the parallel cables to mate them. I've seen someone fashion an 30 Amp outlet box with 2 - 120volt plugs. Seems to work. Blair