Hi Brian,I'm not sure which model Ioto switch you have but the contactors in my switch are 230v which is only engaged when the generator is used. It will default to land line/inverter when no gen. power is presant.Good LuckNick-
My generator is currently set for 240 volt and came that way. The generator manufacturer highly recommends changing over to 120 volt only unless 240 volt is required. The generator will not be able to maintain proper voltage if the load is unbalanced on the two 120 volts leads in 240 volt mode.I was originally thinking about only using one 50 amp leg of the power cable, but Jack and Ace have an easy answer for using both legs when on shore power.
If you switch your generator to 120 only, you'll need to be sure you have adequete wire size on all conductors. If your generator is 7.5kw or less a single 6 AWG is fine BUT! if your generator is 12 or 15 KW you'll need 2 ea. 6awg conductors for each the hot and neutral. That's 2 hots AND 2 Neutrals from the generator to the transfer switch and