#33265
Breathial
Breathial
Survivalist
member3

<div class=”d4p-bbp-quote-title”>undeRGRönd wrote:</div>PS:<br>
Very interested in your Solar addition, if you do it. It was something I was going to recommend, but you already mentioned it :D

As I’d mentioned in a SHTF scenario, you’ll need reliable power, fuel, water and food. If you can get reliable power, it’ll also help out on the heating and cooling needs, depending on how you set up your RV. But like a house where you’re upgrading, you must make sure your foundation is well-built, before you start adding on… In my case, I retrofitted my RV with a 2.8kW Magnum invertor, with additional monitoring and programming equipment, off of Amazon.com (http://www.amazon.com/gp/product/B002MWAATK/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1). The original 2kW invertor was not functioning, and was so old that there were no replacement parts available. The catch was that moving up 20% in maximum capacity required installing new DC cables to the battery bank, 4-0 wire that also required my purchase of crimpers, spades, and a new disconnect switch. the 4-0 wire was required because maximum current could reach 300 amps. I tied in the invertor with new gel-cell batteries giving 500 amp-hours of capacity, at 12V (https://www.1000bulbs.com/product/56335/BAT-UB8DGELL4.html?utm_source=SmartFeedGoogleBase&utm_medium=Shopping&utm_term=BAT-UB8DGELL4&utm_content=Solar+Batteries&utm_campaign=SmartFeedGoogleBaseShopping&gclid=CKXDru6S8cICFYlefgod_q8Acg).

Now that the electrical system has been upgraded, I can say that the massive batteries and inverter work superbly; there have been a variety of little things to fix, but the electrical system is perfect. Future plans include using installing at least 1000 watts of solar panels, probably 1200. With limited roof space due to skylights, vents and fans, I have to go with smaller 100w panels, that I can fit to the available space and work around the various protrusions. I actually measured the entire roof, mapped the free space and worked out that I could install up to 16 100w panels. But that would leave no room to walk around on the roof if needed.

Another aspect is that a thumb-rule for solar panels is that the wattage rating multiplied .33 yields the approximate amp-hours that would be charged into the battery on a relatively nice day. So, with batteries of 400 amp-hours (allowing 80% discharge), 1200w of solar arrays should be able to fully recharge the batteries. So the 12 panels are sized to the battery capacity, and we now have a matched system. The best deal I’ve found is at http://www.amazon.com/Monocrystalline-Photovoltaic-Battery-Charging-Off-Grid/dp/B00HQAUI3G/ref=sr_1_7?s=lawn-garden&ie=UTF8&qid=1420059618&sr=1-7&keywords=renogy+solar+panels+6 Two kits like this will run ~$1800.

The one catch is that to fully recharge the batteries requires a maximum charge-rate of ~100 amps. And most charge controllers don’t have that high of capacity. The answer is the charge controller from Midnite Solar (http://www.midnitesolar.com/pages/pages.php?article_ID=14). For $750 you have the final piece of the puzzle. Total cost of the complete system should be around $3k.