Category: Home Power

Guest Article: How to Set Up a Solar Electric Survival System, by LaMar

The majority of the U.S. population lives in a city or suburbs connected to a city and is completely reliant on grid power from coal, hydro, or natural gas power plants. In the event of a national or local disaster, regardless of the cause, the electricity system is the weakest link. Without power almost nothing else in a city or town will work. These disasters may be of short- or long-term duration, but depending on the weather and medical needs of your family going without power for even a short time could cause great hardship and even death. In this …


Letter: Rechargeable Batteries and a Solar Charger

Hello HJL and JWR, I was wondering if you could review and recommend the latest generation of rechargeable batteries available and a solar charger as well. I am leaning towards stocking up on rechargeable AA and AAA and the spacer packs that allow these sizes be used as C and D cell batteries. The vast array of options is overwhelming, and I am hoping someone with the expertise required can help. Thanks for all you do. Take care. – J.W. HJL Replies: I have chosen to use a modular route so that I have the flexibility to charge whatever I …


Letter Re: Off-Grid Electronics

James, EBook readers and many other small electronic devices can be charged/powered by AA batteries using external power packs like these, available at Amazon and from other Internet sellers. [JWR Adds: And of course there are a plethora of photovoltaic AA battery chargers available. Well-prepared families should have the ability to charge size AA, CR-123, and 9-volt NiMH batteries without grid power. Those batteries will all prove crucial for operating short-range communications, night vision, smoke detectors, intrusion detection, and other gear.] Also, the DIYBookscanner web site has some resources for book scanning using inexpensive digital cameras and free software. Regards, …


Off-Grid Electronics, by D. Smith

When I am looking for electronics for my cabin that is so far back in the woods it is cost-prohibitive to get grid power, I look for certain things: Low energy use, flexibility of use,and a long service life. I don’t have a lot of extra room in my cabin but I love to read, so I have an e-book reader. Several years ago, I bought a book scanner and scanned in most of my books to make them e-books. Some people say this is a legal gray area but I have no moral qualms about format shifting an item …


Letter Re: Anderson Powerpoles: The Legos of DC Electronics

Jim, While it’s true that Anderson Powerpole connectors can be soldered, this is usually not a good idea, for several reasons: 1) Soldering is weaker than crimping because it interposes a soft metal– and possible air voids– between the copper of the wire and the copper of the terminal. A properly crimped connection places the wire in compression and the surrounding terminal in tension, ensuring a mechanically strong joint. 2) Soldering adds resistance to the connection. In a properly crimped connection, there are no gaps at all between the wire and the terminal. However low the resistance of solder, it’s …


Anderson Powerpoles: The Legos of DC Electronics, by Dan in Alaska

To say that I’m a neophyte in the electrical world, or as we say here in Alaska a “Cheechako”, is making a big understatement.  So, a couple years back my co-worker and friend got me into Amateur Radio, also affectedly known as Ham Radio.  I studied my ARRL Technician book and passed my test, but it just barely rattled what I had in my head 20 years ago from my only electronics class I had back in High School where we studied Ohm’s law, identified a resistor, and made a strobe light.  So, I’m on a big learning curve.  I …


Letter Re: More Bureaucratic Over-Reach

Sir, The faceless “bureaucratocracy” strikes yet again, threatening to condemn an off-grid homeowner for allegedly violating an “international property maintenance code” due to lack of running water and electricity – even though neither utility is specified in said international property maintenance code.  How does an international code apply within the confines of an incorporated entity like the City of Cape Coral (which has its own building codes adopted pursuant to its own ordinance procedures)?  And now the city has graciously indicated that, if the homeowner can prove she can “sustain herself” without these utilities, they “might be able to reach …


A Winter Storm After Action Report, by Emily in North Texas

The ice storm that hit north Texas this past Thursday was forecast at least four days in advance, if not longer, but when it hit  apparently just about everyone was taken by surprise.  Drivers on I-35 north of Denton were stuck for so long they eventually abandoned their cars and sought refuge in local churches.  There was talk of sending in the National Guard to rescue them before that.  These people had days of advance warning about the weather but chose to drive anyway.  (Many of them apparently on their way to a rap concert in Dallas.)  Imagine the conditions …


Letter Re: Alternative Power Systems

Dear Mr Rawles, Mr J’s submission makes interesting and useful reading, however I would like to add a few observations on the subject to possibly aid the decision making/wallets of people who are building/upgrading photovoltaics systems. – Batteries: if at all possible get used golf cart batteries that have been properly maintained. Around here they get recycled for a $25 core charge which is easy to beat. My deep cell batteries are now 4-5 years old (2 seasons in various golf carts and 2.5 years in my battery bank. They are in like new condition as they take really well …


Letter Re: Low Voltage DC LED Strip Lights for Disaster House Lighting

Dear JWR: This might have been thought of before, but I just stumbled into something called LED strip lights. Here is a sample. They come in 15 meter rolls, are about 1/2 inch wide and have 300 individual LED lights. They can be cut into segments between every third light. They run off of 12 volts DC and are actually rather bright while using little electricity. If you purchased one of those little strips the reloading companies sell to mount inside the press so you can see what’s going on, it is probably this stuff. There are several versions. Some …


Letter Re: Light Blocking Suggestions for Windows

Mr. Rawles, I’ve just listened to another interview you gave, and noted yet again that you consider light control of utmost importance.  I have several suggestions from the fabric store.  There is a material that really does work perfectly for light control at a reasonable cost (helped by the readily available Joann Fabric Store – also online – 50% off coupons): drapery lining material referred to as ‘blackout’ fabric.  A common brand of this fabric is Roc-Lon, if searching Joann.com online for it.  Another fabric I’ve worked with is the Warm Window insulated shade system (www.warmcompany.com and also carried at …


Letter Re: AC Wiring Safety Warning

Hello Sir: I suspect this may have gone unnoticed by most, but as a former electrician (12 years in the trade) this passage caught my attention:   "I saved some money by making my own connections and crimps. The 00 wire was too thick for my wire strippers, had to use a separating disk with my Dremel tool."   Let me cauthion readers that stripping wire this way is a bad idea. Likewise, taking a box cutter (razor knife) and scoring the insulation in a ring around the cable is also bad. Stripping wire this way tends to cut slightly …


Five Letters Re: Tips on Selecting and Operating a Generator

Sir: Re: Gary D.’s piece on generator use. Good article; I’ve learned a few additional things over the years about generator usage which your readers may find helpful. Power cords – usually, they’re undersized for the load. There are different American Wire Gauge (AWG) specifications for current carrying capacity: 16 gauge – 12 amp maximum for 25 ft, 3.4 amps for 100 ft. 14 gauge – 16 amp max at 25 ft, 5 amps at 100 ft.. 12 gauge – 20 amps at 25 ft, 7 amps at 100 ft. 10 gauge – 30 amps at 25 ft, 10 amps …


Alternative Power Systems: An Update, by David J.

A couple years back I wrote a piece for SurvivalBlog about alternative energy in the suburbs.  I described a strategy for dealing with a potentially prolonged blackout in suburbia.  Essentially the plan is to keep a low profile, by camping in my grid tied, stick built, difficult to defend home.  This was accomplished by shrinking our energy footprint by using a well-insulated basement, propane heat and small scale solar to primarily power DC appliances.  The article is still available in the SurvivalBlog archives.   It is a sound strategy, well within the reach of most suburbanites and could keep many people …


Tips on Selecting and Operating a Generator, by Gary D.

Those of us who plan on “bugging in” during  upcoming times of uncertainty realize the need to plan for possible extended power shortages or blackouts. These preparations can range from a total separation from anything electrical or electronic to a series of sophisticated alternate power sources designed to completely power a survival location up to pre-blackout levels.  Based on the questions frequently asked by members of the survivalist community in numerous forums, the most common item of interest for the temporary generation of power for daily living seems to be the portable generator. Some of the most frequently asked questions …