By Jim Leckie; et al

ISBN-10: 0871561417

ISBN-13: 9780871561411

Different houses and rubbish: Designs for self-sufficient dwelling [Paperback]

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Also given is the maximum allowable current for copper for the most common types of insulation, Types T, TW, RH, RHW, and THW. The most common wire in use is Type T, though Type RHW is often used for heavy currents. 1, No. 159 ohms per 100 feet. 6 volts for the load)--quite a bit of loss, but perhaps acceptable. If the source were only 12 volts, then more than half would be lost in the wiresclearly unacceptable! 2, based on allOwing a 4 percent voltage drop in the connecting wires (electricians customarily shoot for a 2 percent drop, but we' ll ease up a little here).

12 or No. 14, about the same size as the lead in an ordinary pencil. To connect your windmill to your house, you may end up having to use very heavy, very expensive wire, such as No. 0 or No. 00 (sometimes written as 1/0 or 2/0), with a diameter of around one-third of an inch. 1 gives some values of wire resistance, in ohms per 100 feet, for various gauges of copper and aluminum. Copper is standard and preferred, though aluminum is sometimes substituted because it is cheaper. Also given is the maximum allowable current for copper for the most common types of insulation, Types T, TW, RH, RHW, and THW.

Of all climatic variables, wind to protect your glass. is the most affected by your individual site conditions; Windbreaks general climatic data will probably be insufficient. 30 Air movement pattern around a house. 30). Wind acting perpendicular to a more solid windbreak (a wall, earth berm, or building) is reduced in velocity from 100 percent at the break to about 50 percent at distances eqUivalent to about 10 or 15 heights from the break. Open windbreaks, such as trees and bushes, offer a maximum reduction in wind velocity of about 50 percent at a distance equivalent to about 5 heights.

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Other homes and garbage : designs for self-sufficient living by Jim Leckie; et al


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