I love looking at the old ads and the USEFUL diagrams. If anybody doubts the utility of these systems, send them to me.
When I was building my house, we had a hurricane and an outage of 4 days, the longest I had ever experienced. So when I wired the house, I put all the lighting circuits and some outlets for business stuff on a sub panel with a PS2524 Trace inverter fed by a stack of 8 golf car batteries, just about like what you have in the diagram, for a design runtime of four days. This was 20 years ago, when solar was not so affordable. This was just a battery backup system and it worked great. Being the last house on an REA line you have to expect outages from thunderstorms and suicidal squirrels, but not us. The lights stayed on!
Then we had that big run of hurricanes a while back and Hurricane Ivan gave us an outage of 5 weeks! When it was obvious the power was not coming back for a while, we brought an extension cord to the kitchen to keep the basics running. We could keep the battery bank topped up by charging the 24 volt bank in halves with the car or pickup, but dragged the old diesel out of the barn to run the whole house.
We just ran the generator in the morning before work and in the evening before supper. We could cook and do laundry, heat the water heater and charge the batteries with just 2 or 3 hours a day of generator time. The generator ran at a heavier load, operating more efficiently than the neighbor’s Briggs and Stratton that was busting a gut and guzzling gas, just to run a ceiling fan. OUR ceiling fans ran all night on quiet inverter power!
Total fuel usage was 43 gallons of diesel for 5 weeks off the grid. The neighbors had given up on finding fuel after just a week.
Now, thanks to changing times and great prices from Sun Electronics, we have updated the system. The lighting circuits are the same, but the kitchen basics have been brought on full time. The big difference is that there is no AC connection to the inverter to maintain the batteries. We have 7kw of solar online, so far, and growing it as time and money permit. Your Sun AMS230 batteries, 8 of them (plus the solar boat in parallel), have brought us through 4 day cloudy spells and the coldest week I can remember.
I do not regret for a moment spending the money I have invested in my backup and off grid power systems.
Folks, this stuff works.