Our electrical system has both AC and DC circuits and provides the flexibility to run our house on grid or off grid. Right now, we are plugged into the grid but we already run our lights, furnace, and fans on DC power. When we move to our new location, which won’t be connected to utilities, all we have to do is add a few additional components to our electrical system. We are sort of treating this as a trial run so we get used to managing our power supply before we actually have to.
Our battery and battery charger. When we switch to off grid we will put in a new bank of 3-5 batteries and put this one existing battery to use in a vehicle. The battery charger will still be used to charge the batteries when we run the generator.
Our volt meter and thermostat. The volt meter is handy for monitoring our battery power. While not an exact science we generally try to keep our battery above 12.4 volts. In this picture the voltmeter is displaying the volts while the battery charger is on. Our AGM battery is fully charged when it reads about 13 volts with the charger off.
The package from one of the LED bulbs we use in our main overhead lights. We use 4 of these for a total of 10 watts which is still less then 1 Amp. 10 Watts/12 Volts=0.83 Amps.
Our 12v DC systems fuse block. It basically performs the same function as a breaker box does in an AC system. It uses common automotive fuses. You can see we labeled our circuits on the cover including the size of fuse that should be used.
In the video I discuss our DC system, Amp Hours, appliance selection and electrical panels.