I have a 3500/4000 predator that trips all the time. I tried a 15A breaker that kept tripping, then I tried a 20A breaker. Installed last night, worked for two hours. With air conditioning, fan and all lights, the TV didn't work. Now I'll let it run for a few more hours, let you know. Just got out of a big storm "ANNA", ran the generator on the TV for 4 days, 24" fan, refrigerator, small freezer, two light bulbs, 2 batteries for phones charged, "Stinger" flashlight, coffee maker , on 16 hours every day at night to run my 30ft trailer with air conditioning, the unit did not defrost at night, at night I ran the generator on top of the trailer so it worked perfectly.