I used an automatic transfer switch to avoid manually switching between power sources because Imma lazy SOB.
Same results, same "rabbit holing" until I finally found a solution. Same converter (PD4045KA), Go Power! TS-30 30 Amp Automatic Transfer Switch, 200 Ah LiFePO4 battery, 3 kW inverter.
The inverter and shore power are wired separately to the transfer switch; the PD4045KA's converter is also wired to the transfer switch, sharing the connection with shore power. Thus, the transfer switch controls battery charging when on shore power; otherwise, the battery is charged via solar charge controller + solar, and we avoid the nasty feedback loop.
The transfer switch controls energy to the RV, but in an automated fashion. Only shore power is plugged-in at the 30A TT-30 receptacle; the inverter is *always* connected, and the transfer switch monitors the power being fed through it and disconnects the inverter when shore power becomes active.
Hope this helps!
Originally Posted by BeGin
WELL THAT DIDN’T WORK lol.
As mentioned in my ‘solution’ above: I wired in a battery disconnect switch in place of the PD4045 OEM jumper (from BATTERY POS/BLK (+) to POS/DC DISC (+) ). All that did was disable DC output from power centre into my TT.
The solution that worked was simple and should have been obvious but I got rabbit holed by the ‘external DC disconnect switch’ reference on pg.2 of the above Guide ... but I did learn what the jumper does
and was able to use the battery disconnect switch installed in the first failed attempt.
The solution that WORKED: First I replaced the jumper so all was stock again. Then I disconnected and pulled the battery POS (+) lead out the back of the PD4045 and wired it, via a terminal strip, to one terminal of the now installed battery disconnect switch. The other terminal of the battery disconnect switch was connected to the terminal the battery POS (+) lead was removed from ie. BATTERY POS/BLK (+). This effectively put the battery disconnect switch in the battery positive wire so it could be ‘opened’. Now I can plug in my shore power line directly into my inverter and not have a loop back to the batteries. Whilst concurrently charging the batteries via solar.
I used 8 AWG wire as it is rated for 50 amps and the PD4045 max output is 45 amps so no breaker was wired in.