Hi everybody. I'm finally starting to make some real progress on my van build. I'd like to get some feedback on my electrical plans.
The rev0 is a detailed version of the typical format that I've seen on the forum for an electrical layout. I was having trouble tracking all the loops though when it came time for wire sizing, so I made an easier diagram (rev1) that I would have used back in my circuits class (many moons ago). Personally, I find it much easier to visualize the flow of power through the system.
Here is my plan on battery/solar panel sizing:
My estimated daily (24-hour) consumption is about 60Ah
My estimated nightly consumption (Sunset to Sunrise) is about 25Ah
On average I'd like to enter the evening on a full-charge and then be waking up in the morning in a 25 Ah deficit, which should be no more than 20% of my usable battery capacity. This sets my usable battery capacity at 125Ah and my total battery capacity at 250Ah. Therefore, I will be waking up every morning with a 90% SOC.
If my basis for charging is solar, I will need to have the ability to put in net 25Ah to my batteries during the daylight hours. During that period I will also be using about 35 Ah. I'm thinking that I'll need a solar array between 200-300 Watts depending how I mount it (tilt vs flat).
One think i know i have not accounted for yet is battery de-rating in cold weather. I haven't done the calcs on this yet, but I know it will probably push me up to a 300W battery bank. Meh.
The pictures don't show up very large, so I've got a link to my website where you can find larger (not much) pictures... I'm trying to figure out how to make them bigger.....
https://rondevan.weebly.com/electrical.html
Thanks in advance for the reviews!