Liberty inverter setup and amp usage

[jelmore]

When plugged in to 30A or any other shore power the inverters (internal Transfer Switch) passes all AC through and performs no function other than acting to keep batteries chaarged.

Your total load on 30A service is just that.. 30A max .

Hmmm. That doesn't always seem to be the case. It seems that the only time AC flows to the red bezel circuits is when the battery chargers are on. If the battery chargers are off, then those circuits seem to run off of the inverters only and all the 30 amps go to the other circuits. I have seen the total volts in the 40s and low 50s with the battery chargers off without tripping the 30 amp breaker and the only explanation I can imagine is that those amps over 30 are being supplied by the inverters.

I have always wondered if my inverters are wired strangely since they only provide AC to the red bezel circuits if the battery chargers are on.

[VegasDogMan]

The Shocking Truth....

On the Freedom 25 inverters there are two sets of input wires. One set for Charger and one set for Transfer Switch. Liberty ties both sets together so that when you kill the "Charger" breaker on your AC Breaker Panel you remove all shore power from the Inverter Input...

No power to charger and no power to Transfer Switch... Inverter then takes over and produces AC from battery power. Just like when you unplug coach.

Labelling on Breaker is misleading.!

[jelmore]

The Shocking Truth....

No power to charger and no power to Transfer Switch... Inverter then takes over and produces AC from battery power. Just like when you unplug coach.
\

So then, is this correct?? --> When plugged into a 30 amp circuit and both battery chargers off, the inverter output from both inverters go into a common pool (as I presume the charging function does), and that pool powers the red bezel circuits while all of the 30 amps AC is available to the other circuits. When the battery chargers are on, then only 30 amps is available to all circuits, including the battery chargers.

Sorry to labor on this -- maybe I haven't read the instructions enough times to understand that way Liberty does this. All of this is really just in the interest of power management when 50 amps of 240 volts isn't available.

[jack14r]

On mine there is inverter 1 (left side of electrical panel) and inverter 2 (right side) they do not pool/combine.#1 inverter supplies power to the refrigerator etc. and #2 supplies power to the water pump etc.I can't remember every item that has the red bezel around it.

[VegasDogMan]

On my liberty with both charger breakers OFF, each inverter powers four or five circuits.
They DO NOT Pool Power - it would be difficult to phase lock and synchronize the output of two inverters.
No AC water pump circuit on my coach - have 12V DC Water Pump

From my memory circuits powered by each inverter are... (Inverter circuits have RED RING around breaker)


Inverter #1
1. Fridge
2. Coffee Maker
3. TV
4. Front Outlets
--------
Inverter #2
1. MicroWave
2. Rear Outlets
3. Air Compressor
4. Outside Entertainment Center
5. Circuit for Outside Outlet on one of the inverters.

If you turn off the small switch on Inverter Monitor Panel you'll lose the four circuits belonging to that inverter.

[gmcbuffalo]

"phase lock and synchronize the output of two inverters.

Could you explain what is a "phase lock and synchronize".

GregM

[gmcbuffalo]

Another question.

with your inverter chargers turned off your inverter then powers the two inverter circuits you describe. Now if you turn off the inverter function are you telling me you have now power going to Inverter Circiuts 1 and 2 and those appliances do work?
GregM

[jelmore]

Another question.

with your inverter chargers turned off your inverter then powers the two inverter circuits you describe. Now if you turn off the inverter function are you telling me you have now power going to Inverter Circiuts 1 and 2 and those appliances do work?
GregM

No. If I turn off the inverters, then all the circuits that those inverters power are turned off, just as VegasDogMan said. Those circuits stay powered whether the chargers are on or not, but not if the inverters are off. If the chargers are on, then those circuits are powered by shore power or generator power. If the chargers are off, then those circuits are powered by the inverters (batteries).

That's my understanding, anyway.

[Jim_Scoggins]

OK. With the inverters off, those items serviced by the particular circuit are lost.
Using the refrigerator as an example. With an inverter failure one has lost the refrigerator.
The options are:
To manually by pass the inverter at the inverter itself--join the wires.
Replace the bad inverter charger with a good one.
Get at the refrigerator cord so as to run an extension to it from another outlet controlled by the other inverter.

Hence, Jon's work to set up an inverter by-pass switch.

Q1. All this still begs the question. Why in the world did Liberty set it up this way? What advantage is there to this set up?

Q2. Why was not an inverter by-pass incorporated from the get-go? Many so called lesser coaches have an inverter by pass.

Q3. Are the newer Liberties still set up this way?

I guess I am still really missing something and will differ to any and all GURUs.

[jack14r]

The Heart 2500 Freedom Inverter has a set of contacts in it that allow it to bypass if shore or generator are being used.Liberty's electrical system does not load share,therefore if there is an inverter fails, every circuit will work on gen. or shore power.I had a inverter failure in November and it was a minor inconvenience,I had to start the gen. to have water.Other designs that load share will not bypass the inverter and those circuits will not have current. In those electrical designs it would be important to have a bypass as Jon has described in other threads.