Inverter Install?

[nu2this2]

I have a 2000W inverter and wish to use it in my trailer but have questions.

I assume that when the inverter is connected to the batteries, any A/C item plugged to the inverter will be energized. My trailer has an outside shore power receptacle meant to be connected to power supply from a trailer park. A dogleg RV adapter from the trailer,is then connected to the inverter by a heavy duty extension cord. This allows me to bypass the supplied power Am I not now duplicating the A/C from the campground? If so, why don't my A/C outlets work in the trailer:@

I am not electrically versed and am at a total loss.

Thanks for any help.

[KD4UPL]

If you plugged your shore power cord directly into your inverter then yes, all the outlets in your RV should have power. You would want to turn off your built in converter (battery charger) when doing this. You would also want to make sure your refrigerator and water heater are set to gas and not electric.
It sound like you've done this and don't have power. That's just basic troubleshooting. Check for power at the inverter, check for power at the dog bone adapter, check for power in the RV breaker panel, etc.
You do have a volt meter I hope. If not this is a useless exercise.

[2oldman]

First, a/c is traditionally used to mean air conditioning. AC is ac power.

You don't need an inverter when connected to shore power, if I read your post correctly. Now, if your 'inverter' is actually an inverter charger, then it DOES need 120v shore input power to be a battery charger.