Questions about wiring for Samlex inverter/charger/converter

[phemens]

Hi,
In the process of installing a Samlex 3012 inverter charger. This will replace existing stand-along 2000W inverter, along with my Boondocker converter/charger.

Couple of questions, sorry if these seem basic, but want to make sure I do it right (not an electrician, but can get it done properly with right guidance!)


I will wire directly from the shore power receptacle (the marine style twist) to the Samlex Grid input using 8 AWG. Right now it goes to the distribution panel.

Samlex wired to bank of batteries (4x100AH LIFePO4) with 4/0 (fused)
Samlex grounded to chassis.

Samlex AC output (8AWG) back to Main breaker in distribution box (?) - this is the part I'm unclear on. Part of the confusion is that the way the rig is wired now, if I cut the main breaker on the distribution panel, all goes dead on AC - fine. However, if I leave breakers on, but turn off power to the Boondocker converter/charger, I lose power to the refrigerator (maybe other things, haven't checked) - does the fridge require 12V to run on 120V?

Thanks in advance

[phemens]

BFL13 - Yes, that's what I mean, the shore power cord, mine is marine style (hence receptacle).

2oldman, The Boondocker charger/converter has a physical on/off switch. I guess the reason that the RV loses 12V right now is because I disconnected the batteries while swapping over to the LIFePO4 units. The converter provides 12V to the rig when connected to shore power, no?

[BFL13]

What is the "shore power receptacle" in the RV? Only thing mine has is the shore power cord going to the Main breaker. ( with no installed generator and transfer switch)

[time2roll]

Yes the fridge needs 12v. Why is the battery disconnected?

[2oldman]

phemens wrote:
However, if I leave breakers on, but turn off power to the Boondocker converter/charger, I lose power to the refrigerator

How do you 'turn off' the charger? When I went whole-house I installed an spst switch for the converter 120v power.

Your 12v appliances should never lose power simply if the charger is off...unless you've messed with the wiring. That means you could never boondock.

Rest of it sounds good.. especially the Li. Did you consider going higher voltage?

[pianotuna]

Yes, the fridge requires 12 volt for the control board.

If the roof air has a "wall" thermostat, it also requires 12 volt.

So does the water heater, and furnace.

Am glad you went #8.