I have a Fourwinds 32ft Hurricane class A gas motorhome with 30amp hookup and a 4.5KW generator. I am trying to add a 3000 watt inverter. I took off the paneling covering the back of the electronic equipment ie. power panel, converter charger and power transfer and low and behold there are 2 power transfer switches. They are identical Lyght Power Systems LPT30s. Would anyone know why 2? I was planning on cutting in after the transfer switch and before the main breaker panel but 2 switches!