This Yamaha Generator RV Adapter is required to utilize your 30 Amp generator outlet with RV's, campers, and motor homes. This is important if using a portable generator to start an RV air conditioner. Most RV air conditioners will require a minimum of 25 Amps to start. Our adapter makes power supply to your RV easy. It consists of the correct 30Amp male twist-lock on one end, which fits the Yamaha generator 120V/30A twist lock receptacle. The other end is a 30 Amp RV Style female connector, which will accept a 30amp RV plug.