Quote from: Nearings Fault on Sep 12, 2023, 10:19 AMI've come across a great deal of these systems that get built up over time. I would for sure say it's time to change out the inverter to at least a 24 volt unit. Your cabling and breaker costs alone would make it worth while. 24 volts would take care of most of your issues even allow you to keep your prized C60PWM ( also my first controller) controllers in play. The PWMs are fine on the 230 watt panels though not great for lithium as they relied on the lead acid battery to regulate voltage.  Your lithium can get thermal run away if you push too much voltage at it. Having said that the under load voltage of the 230 watt panels works well for the bulk settings of most 24 volt controllers. I have a contact in London Ontario area that rebuilds and trades in used inverters. I recently traded in a vintage Trace DR 12 volt unit a client had kicking around and they used it towards a 24 volt magnum MS (also a great inverter). 24 volts allows you to do easier dump loading which on a system your size would help a lot. As soon as the arrays went above 1200 watts the higher voltage inverters became the norm. Not so much for the inverting as for the charge controller, cabling and disconnect costs. I still do some 12 volt but mostly in the mobile or cabin realms.
Cheers, NF

Yes, I have been thinking of making the jump to 24 volt. So many issues though, I have and I kid you not at least 6 great inverters I have picked up dirt cheap over the years, I have heavy duty 12 volt chargers, multiple. I would have to wind a new stator for the wind turbine. It is hard to make changes when things are mostly working fine but I suspect the jump to 24volts may be in the future or I am thinking about having both a 12 volt and 24 volt and just switch between them as needed. I don't know what I am going to do.