DPDT relays is how an IN verter (not CON verter passes shore power for hotel loads.
The CHARGER section of the IN verter is connected BEFORE the AC shore power enters the In verter. When the relays relax the In verter cannot send IN verter generated power backward toward the shore power cord and plug.
With the number of CON verter brands on the market it is always best to review the manual that came with the CON verter to see if the manufacturer OKs the powering of the rig with CON verter power only (sans batteries)
Costs nothing to read a manual. Many of today's huge rigs an consume a lot of AC and DC power.
It works! Is no substitute for knowing that you are operating it correctly. IT WORKS! I can drive up an off ramp at 3 AM in the morning and drive in reverse for 10 mile without encountering another motor vehicle. It Works!
When it does NOT work and a person argues with a qualified technician that is taking time to explain why it no longer works, is sort of ridiculous, isn't it?
Here it is on page 16 of your user manual
"Doesn't matter. It should work"
