I need some direction on performing a change from my old 24 volt system to a new 48 volt. This is a unique off-grid system where two small arrays combine and by using manual disconnects can toggle back-and-forth with a back-up 21kw diesel generator to use if the PV is down or when pumping water to our storage tank. Here is list of what is currently installed:
- Trace Engineering 2524 inverter.
- Xantrex C-40 charge controller
- 4 Concorde AGM 6 volt batteries
- 4 x 175 watt Siemens 24 volt PV panels
- 4 x 52 watt ??? 24 volt PV panels
- 60 amp fused disconnect from combined PV array
- Outback calls this an inverter/charger but I don't see any reference to wiring from PV array. Does this mean I need to leave the C-40 charge controller in place and configure it for 48 volts?
- What is the process to re-wire the Siemens and other panels for 48 volt output?
- Where, in the wiring do I need lightning protection installed?
- Will I have enough PV production to support the battery needs once I have the eight batteries wired in series?
Comment