Ben and Kathy
Well-known member
Hello All!
We recently purchased a slightly used and much loved 385FL (Unit #2 off the assembly line) and are considering replacing the installed GD1620 2000w inverter with a 3000w Victron MultiPlus II. The RV came with a generator.
The initial goal:
Based on the above I believe I need to do the following to install the MultiPlus II: (and remove the GD1620)
Currently the RV is in winter storage without any power (the existing pair of lead acid batteries have been removed - actually they were accidentally drained to zero 2x before we realized that the battery disconnect didn't fully disconnect all power from the batteries, so they are essentially trashed)
Would appreciate any thoughts feedback from those experienced with this type of upgrade.
If there is interest I will create a new thread to track progress as we do the upgrade.
Thanks!
-Ben & Kathy
We recently purchased a slightly used and much loved 385FL (Unit #2 off the assembly line) and are considering replacing the installed GD1620 2000w inverter with a 3000w Victron MultiPlus II. The RV came with a generator.
The initial goal:
- Be able to run any of the 120v outlets while not connected to shore power or firing up the generator with the exception of the AC units
- When stored:
- we plan on having some level of camper automation (home automation on wheels) monitoring the environment
- a cellular connection running at all times for remote access
- a small residential dehumidifier (or the new Colman unit if it ever comes out and makes more sense)
- potentially some security cameras
- We currently do not boon dock though that is a future consideration
- We do want to be able to use the microwave at a rest stop
- We will be installing 1050 watts of solar on the roof
- Two sets of three 175w Renogy flexible panels wired in series wired in parallel
- Based on the math the above configuration will work with the factory installed GoPower solar wiring which is spec'd at 30amps
- I have not yet laid eyes on the physical wire to verify that it is at least 10 gauge
- To start there will be two Enduro Power Baja Series 12V 200Ah Deep Cycle LiFePO4 Lithium Batteries wired in parallel with the potential for a 3rd to be added (to support the use of a single air conditioner off grid)
- I have all of the major parts to complete the solar install and am considering adding the MultiPlus II for AC power flexibility (and visibility to power consumption which will be logged and monitored by the home automation system)
The breaker panel is separated into two sections, 1) Shore Power / Generator and 2) Shore Power / Generator / Inverter with specific outlets and the residential refrigerator.
Based on the above I believe I need to do the following to install the MultiPlus II: (and remove the GD1620)
- Disconnect and cap off the AC wires coming from the GD1620
- Disable/disconnect the battery charging circuit on the RV electrical panel inside
- Connect the output of the transfer switch (shore / generator) to the MuliPlus II AC in connection
- Connect the AC line that was originally connected to the transfer switch to AC 1 output of the MultiPlus II
- I have not yet pondered the changes required for the 12v side of this conversion yet
Currently the RV is in winter storage without any power (the existing pair of lead acid batteries have been removed - actually they were accidentally drained to zero 2x before we realized that the battery disconnect didn't fully disconnect all power from the batteries, so they are essentially trashed)
Would appreciate any thoughts feedback from those experienced with this type of upgrade.
If there is interest I will create a new thread to track progress as we do the upgrade.
Thanks!
-Ben & Kathy