Aug
07
2008
16

Free Electric Load Calculator

Free NEC Standard Method Single Family Residential – Electric Service Entrance Load Calculator


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Enter plain numbers in cells without text or labels. If you leave any cells empty they will be calculated as zero.

Total Square feet of dwelling

Total # of Small Appliance Branch circuits (must be at least 2). If you have gas appliances which require a 120v branch circuit include them here. (more…)

Written by David LaFerney in: Calculators | Tags: , , , , , , ,
Aug
06
2008
1

Building a Tight Thermal Envelope

Simple things like caulking around pipes will make your home more comfortable and save a lot of money and energy.

Simple things like caulking around pipes will make your home more comfortable and save a lot of money and energy.

The Airtight Drywall Approach to a Tight Thermal Envelope

The building envelope is the part of the house which separates the indoors from the outdoors, and consists of the floor on the bottom level, the ceiling on the top level, the exterior walls, the exterior floor bands, and of course the doors and windows. The standard house envelope leaks air like a sieve and accounts for something like 30 percent of climate control costs due to air infiltration alone. Fortunately during construction it is cheap and easy to make the thermal envelope much tighter and to make a considerable improvement in the energy efficiency of the finished home. According to the Federal Energy Efficiency and Renewable Energy website “Such airtight homes often consume one-third less energy when compared to similar unsealed homes.”

During the Framing Process

  • Seal under the exterior walls – I recommend that you use construction adhesive to glue your exterior walls down (more…)
  • Aug
    01
    2008
    5

    How to Thaw Frozen Plumbing Pipes

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  • Locate the main water cut off for the house and procure any tools that you may need to quickly turn the water off, in case you have leaks when it thaws out. But unless you suspect that you have burst pipes, don’t turn off the water yet. If possible draft an assistant for the extremely dull job of being handy to quickly turn off the water in case you get it to flow, and leaks are detected.
  • Minimize Distracting Noise – You will usually be able to hear water flowing through the pipes once it starts, and turning the radio or TV off could help you to prevent a big mess in case you have a burst pipe.
  • Open up all of the indoor faucets (sinks, bathtubs, etc) for two reasons: 1) if you can achieve just a little bit of flow through the pipes, then often the flowing water will quickly thaw out the ice remaining in the pipes. 2) To relieve pressure when flow is restored so that any leaks will flow at a slower rate to give you more time to turn off the main water valve, and thereby minimize water damage.
  • Crank up the heat. Try to get heat to the areas that are most likely to be frozen. Obviously the most likely places for the pipes to be frozen are where it is coldest – crawl spaces, unheated basements, water meter boxes, garages, etc. Be careful with space heaters and extension cords, you don’t want to burn down the house. Don’t crank up the heat and then run off to town. Keep an eye on everything just in case the water starts to flow. (more…)
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