@mpeason Very nicely laid out. A couple of quick questions for the sake of anyone coming along who might be interested:
1. What is the amperage rating of the ANL/CNN fuse feeding your bus bar?
2. What size wire is feeding your MPPT from the busbar?
Sure - 100 amp ANL feeding the bus bar, and 8 awg from the MPPT to the busbar.
I think I did the calculations correct, but if you see an error I'm open to feedback. Thanks
Thanks for the insight! I'll make your recommended changes this weekend and post a follow up picture.Cool. My only comment here would be that unfortunately your 8 AWG wire is not rated for 100A. 55A at best. So in the event that your controller catastrophically failed or there was otherwise greater than 55A (but less than 100A) constant on the 8 AWG wiring/circuit connecting the controller to the busbar, the 8 AWG wiring will turn cherry red and likely start a fire before the 100A fuse would blow. To prevent this, you would need a fuse on/protecting the 8AWG circuit in addition to the 100A already in place.
Technically I would recommend a wire ~1.25x higher than the continuous current passing through it. You may not be at a full 50A but if you are anywhere past 44A on average, I would recommend a 6 AWG with a 55A fuse per Victron's manual/datasheet.
As a general rule of thumb, every circuit needs to be fused relative to the wiring it's protecting. There are exceptions but following this will generally keep things safe.
To be clear, I'm not intending to nit pick at your installation whatsoever. Just a general comment for safety.
Does anyone have any insight into the programming of the MultiPlus II? My installer has never installed one and is waiting for the programming parameters from AM Solar before he installs it. I'm just curious how big of an issue this is. He's installed tons of other MultiPlus's in the past.
There are a HEAP of videos on youtube showing you exactly how to do it, make sure you're installer gives you a discount for having to do his job for him.Does anyone have any insight into the programming of the MultiPlus II? My installer has never installed one and is waiting for the programming parameters from AM Solar before he installs it. I'm just curious how big of an issue this is. He's installed tons of other MultiPlus's in the past.
There are a HEAP of videos on youtube showing you exactly how to do it, make sure you're installer gives you a discount for having to do his job for him.
They wouldn’t be anywhere near my equipment, even if they didn’t know how to do it, the fact they were dumb enough to admit they didn’t and lazy enough to not bother going and researching and just left it up to the end user/customer? No thanks!!!!LOL! No kidding. Sounds like the installer hasn't taken the time to keep up on recent releases.
Nice and clean ?Recently installed the new MP II in my 5th wheel. 400ah Lithium and 600w of solar panels. Happy with it so far.
I’m really hoping someone can confirm. All I really need to change is the battery setup to lifepo. I would rather use a Bluetooth dongle than a laptop and USB.Think i read you can use Victron Connect to program....
I’m really hoping someone can confirm. All I really need to change is the battery setup to lifepo. I would rather use a Bluetooth dongle than a laptop and USB.
So to me that means I have to MK3-USB to change the battery profile. Also means to update the inverter itself will require a USB. I’m thinking I will have to buy one and find an old laptop.Alsofrom Victron:5. Configuration
www.victronenergy.com
Inverter/chargers can be connected to in two ways:
- Using USB, this requires the MK3-USB, full details here.
- Wirelessly, over Bluetooth. Requires the VE.Bus Smart dongle accessory. The available functionality is monitoring as well as operation of the product: switching between on/off/charger-only and setting the input current limit. Changing the configuration, as well as firmware updating a VE.Bus product, is not supported.
Exactly my thoughts. That’s why I posted the question. I guess I’ll find out first hand later this week.Anyone able to confirm this? Seems nuts that a brand new product would still require an external single for configuration and an additional dongle for Bluetooth monitoring.
Does the Cerbo change this requirement?