Liberty Inverters/Shore Power

[Lee Bornstein]

Need to leave my coach in unattended storage for 3 days with a fridge full of food and only 20A electric available.

Thought I'd just turn off inverters and chargers and all circuits except for fridge.

Good Idea YES BUT fridge is only on inverter circuit and Inverter must be on in order for fridge to work.

In a 97 Liberty that's plugged in to shore power, does inverter (When Turned On) actually create 110V from 12V or does it Pass Thru the 110V?

Don't want to run watchdog while Im away for 3 days - don't trust it.

Lee

[Joe Cannarozzi]

I'd be really supprised if that fridge did not work off of shore power with the inverter off.

20 amp should be enough if its the only thing on.

If it does need the inverter to power it, just so long as the batteries are fully charged when you drop and the chargers don't need to put out 30 or 40 amp. innitially, a 20 amp. circuit still should be O/K and use the watchdog for back-up.

[Jon Wehrenberg]

Lee, you need to leave your inverters and battery chargers on along with the refrigerator circuit breaker. If you shut everything else off you will not have a problem.

I say that assuming you have set the dip switches in the rear of the small inverter panels to the lowest charging rate. The inverter manual gives the dip switch settings for this. That way the battery chargers will draw the least power.

I hope you have tried a 20 amp circuit. If it is a GFCI protected circuit you may not be able to use it because it will see a ground fault due to the way the coach automatic current switch is set up.

[Lee Bornstein]

John:
I have one charger set at 30A and the other at 50A. When running on 30A service I shut off the 50A charger.

I will reset the one inverter to 20A and test when I get to the farm in IA tomorrow. Have to leave coach there and drive car (quick trip) to Nebraska to pickup new puppy then back to IA and continue north to Canada by end of month.

Lee

[Jon Wehrenberg]

Lee, I'm sure you will be OK. With charged batteries I only draw about 6 amps with the refrigerator running and all other circuits except the inverter and charger circuits turned off.

[JIM CHALOUPKA]

John:
I have one charger set at 30A and the other at 50A. When running on 30A service I shut off the 50A charger.

I will reset the one inverter to 20A and test when I get to the farm in IA tomorrow. Have to leave coach there and drive car (quick trip) to Nebraska to pickup new puppy then back to IA and continue north to Canada by end of month.

Lee

Lee, what kind of puppy??

Have the farmer keep an eye on the bus.

What kind of paperwork is required to take a dog back and forth over the Canadian border???

[Danss]

Must have proof of Rabies Vac. Dan

[Joe Cannarozzi]

What is the advantage of only being able to run the fridge through the inverter?

[Jon Wehrenberg]

The fridge is not run through the inverters per se when connected to shore power or when the generator is running.

If my understanding is correct (I welcome a correction if I am wrong) the inverters have an internal relay which closes when shore or generator power is sensed. When the relay is closed the refrigerator (and all inverter circuits powered circuits) are directly connected to shore power.

If the inverters are turned off it is possible the relay does not close so the circuit for the fridge is not powered.

Liberty sets the inverter / charger circuits up separately so the inverters can operate without the battery charger function working and vice versa.

[truk4u]

My Marathon must have the Inverters on even when plugged in. I'm going to add bypass switches if Big Red stays home.