general wiring of ground or neutral

Sorry, my Android and desktop are not communicating. I have a genset and shore power connected to the ATS to the AC panel. I would remove the hot from the breaker that feeds the house charger 13.6V and run it to the DPDT switch. One position would feed the boon docking charger 55Amp 14.8V no float type. The other to the house 2Stage charger. I do not want to run my Genset everyday day for long hours and no one likes the noise. The boon docking charger can get the job done in 2 hours every other day. In looking at the DPDT switch, is it possible it is for 30A and/or 50A. In that case L2 is hot as well which is why I should be using the switch grounding screw and connect to the ground/neutral bus bar? Does that sound right? Dino