I was working on my electrical system before my last trip. I didn't quite get it completed because my 30 amp main breaker on my PD 4045 would trip anytime I turned on the breaker to the automatic transfer switch.
My 12v system was working and it was just a 3 day trip so I figured I wouldn't need any 110v anyways.
This last weekend I decided to take a look at it.
I was pretty sure the problem was in the ATS but wanted to troubleshoot it out all the way anyways.
Battery switch on, 12v works, turn inverter on and I have 110v to all of my outlets.
Turn inverter off, hook up shore power, turn on 30 amp breaker (all other breakers off). let it sit a while and it doesn't trip
Turn on CB2 that supplies power to the converter in the PD 4045. Let it sit a while and nothing trips.
Turn on CB3 that sends power to the ATS and it trips. Ok definitely a problem with how the ATS is wired up.
In the previous wiring diagram from a few posts ago you can see a ground wire going from the PD 4045 to the ATS. I decided to remove that ground and it quit tripping the breaker.
But now my relay won't change over. I get the volt meter out and Ohm out the Normally Open and Normally Closed contacts. Everything checked good and looks connected correctly.
Within the ATS I have the inverter connected to the Generator side and the Shore power connected to the Shore side.
I am kind of scratching my head because everything looks correct. Well let me look in the manual maybe I missed something.
Here is the description in the manual
Description of Operation
When the shore power is applied the relay is at rest and power is transferred to the panel.
When Generator power is applied there is a 20-45 second delay and then the relay activates transferring Generator power to the panel.
If shore power returns while the Gen power is present nothing will happen. When the Gen power is removed the relay will drop out and allow the shore side to supply power.
Generator overrides shore power.
Ohhhhh I need to swap my two connections since the generator overrides the shore power. Plus I want the inverter to run through the de-energized contacts of the ATS, that way I am not powering the changeover relay all the time while on battery power.
So I move the inverter to shore power and CB3 to the generator side. Boom now when I connect shore power it energizes my relay.
I can turn on my inverter and I have 110v, connect shore power, the relay energizes swapping over to CB3, I disconnect the shore power and the relay goes back to the inverter. (I wouldn't leave the inverter on while on shore power but the relay works as advertised)
I updated my wiring diagram to reflect the changes 
