Fuse and DC cables for MultiPlus 12/3000
The normal fuse you would install with the 12 volt MultiPlus 12/3000 is at least 350 Amps. This is because it has a surge capability and because as the battery voltage varies so does the current. A 350 amp fuse will avoid nuisance tripping caused by surges. Your cables should be sized for 350 Amps since the primary purpose of the fuse is to protect the cables. From the Ampacity Tables
2/0 cable is good for 330 Amps if you are using marine grade cable, and you are allowed to round it off to the next highest fuse size which is 350. In the instruction manual they recommend a 400 amp fuse and if you do that you would have to use 4/0 cable
In many cases the voltage drop tables
will give you a larger wire size. 2/0 is the minimum wire size for this inverter charger but if you read the instruction manual
they talk about the subject and if there is any distance between the battery and the inverter charger you should double up the cables. (ie doubled up 2/0 for both the positive and negative - the inverter has provision to attach two cables) If you double up the cables you can do two 200 Amp fuses and use smaller cables.
Here are some generic tips for troubleshooting a MultiPlus 1. To reboot the processor disconnect the AC and DC connections and leave them both off at the same time for at least 30 seconds 2. With AC and DC power disconnected check for loose ...
Programming multiple MultiPlus inverter chargers
Here is the Victron article on the subject: https://www.victronenergy.com/live/ve.bus:manual_parallel_and_three_phase_systems All the units need to be identical and have the same (up to date) Firmware They want you to have symmetrical wiring for ...
Programming the Buck Boost DC DC Converter - Part 2
The Victron buck boost DC DC converter is programmable so you get to decide what inputs turns it on and how long it runs for. The purple and green wire are two connections that you can use, it also has a vibration sensor. You can run the program in ...
Suite of Victron parts for Lithium batteries on a boat
The full suite of Victron parts would include the following: Batteries VE Bus BMS - the battery management system BMV 712 battery monitor MultiPlus inverter charger Remote for MultiPlus The Color Control GX (CCGX) is optional, it doesnt do anything, ...
Using a BMV 712 alarm as a signal to start a generator
The Victron BMV series Amp Hour Meters have a programmable relay output on the back of the meter. You can program it to operate based on voltage, state of charge, temperature, or other parameters. The procedure is detailed in the instruction ...