• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education experiences global resources the cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • r ranson
  • paul wheaton
  • Anne Miller
  • Mike Jay
  • Jocelyn Campbell
  • Devaka Cooray
  • Burra Maluca
  • Joseph Lofthouse
garden masters:
  • Dave Burton
  • Greg Martin
  • Mike Barkley
  • Shawn Klassen-Koop
  • Pearl Sutton

Planning a 12v lighting system for a small cabin

Posts: 8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hello everyone!
I'm planning a small off-grid cabin about 250sqft. I currently have a solar setup and I want to run 10-15 l.e.d. lights. I want to keep the lights dc, if I run ac and my inverter fails I have no lights. I would like to be able to turn each one on individually when I want to conserve as much energy as possible.

1.) Would using fuses or circuit breakers be better?

I'm not sure if I would be able to use circuit breakers or which would be most efficient. Perhaps a fuse block similar to cars, boats, rv's , etc...

2.) Does anyone know of a good off-grid 12v wiring book?
Posts: 1491
Location: northern California
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You could go with automotive wiring and cigarette-lighter outlets and plugs. Or, like I did, simply use AC wiring and designate one plate as positive and the other as negative. The problem with that is if a visitor thinks this is an ordinary AC outlet and plugs an AC appliance into it! Fortunately at the one cabin I had wired this way the biggest item that got fried was a cheap CD player!
Most solar design info recommends a fuse between the batteries and the rest of the system, whether or not an inverter is in use. You want the fuse somewhat larger in triggering amperage than the combination of your largest loads, such that it will only blow in the event of a short circuit. A charge controller, preferably of the MPPT type, is a good addition to even a relatively small system, as is a "battery life-saver" according to many.
So I left, I came home, and I ate some pie. And then I read this tiny ad:
Dairy Farming: The Beautiful Way by Adam Klaus
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!