I'll chime in. A while back, while plugged in to the 50A here at home, I fried the bedroom tv, the fireplace caught fire, fried the BluRay, the Dirt devil vac and a contactor in the transfer switch. All due to a loose ground in the plug in the rear of the coach. Since then, hardwired a Progressive in and no problems since, knock on wood.
2014 38GK, disc brakes, MorRyde SRE 4000, 2-Yamaha 2000 gennys, G14's, dual awnings, Progressive EMS.
2014 Ram 3500 Laramie Longhorn DRW with Luverne Bull Bar and skid plate.