Complete newb here, just bought my first RV a few weeks ago, a 13' Scamp. Previous owners only used shore power, so other than the wire harness for the brake/turn lights, it has absolutely no electrical system in it. My intention is to do some serious boondocking out in The Great American Southwest for 6 or 8 months or so, coming into towns to resupply about once a week. So I'm looking to build a serious solar system.
I've been following Thomas' (from I'm Not Lost I'm RVing) Solar Basics video series (https://www.youtube.com/playlist?list=PLeWe9so3BqDsEWKeZYEA4gdi6yJJuoDtF) and in it he assumes that your RV will already have a DC system in place (which mine does not) with batteries (don't have any of those yet) to power stuff like lights, water heater, water pump, 2-way fridge. I'm not planning on having a water heater, and I plan to use a foot pump. I'm actually considering foregoing the fridge and the complications that brings in exchange for a largely can food based diet. I don't suppose setting up a DC system is worth it just for some lights that I could easily account for in what will be my high watt solar system, right? Even if something does go wrong with my solar, I will have flashlights and a headlamp with rechargable batteries that can charge out of a cigarette lighter.
So I guess what I'm wondering is if my end goal is only AC 120v, do I need to mess with DC 12v at all? Seems like I could save a lot of money and hassle and streamline a lot of my system if I could just skip DC.