A good ground in the cold ground.[ILLUSTRATIONS OMITTED] 1. Try to ground to a buried metal object like an underground pipe. That will save you a lot of digging or driving in frozen ground. However, the metal object has to be buried at least 2 1/2 feet below the surface; cannot contain--or transfer--natural gas, gasoline or other flammable liquids Generally, a flammable liquid means a liquid which may catch fire easily. In the USA, there is a precise definition of flammable liquid as one with a flashpoint below 100 degrees Fahrenheit. ; must be all non-coated metal; and you must test its conductivity conductivity /con·duc·tiv·i·ty/ (kon?duk-tiv´i-te) the capacity of a body to transmit a flow of electricity or heat; the conductance per unit area of the body. con·duc·tiv·i·ty n. 1. before you use it. [ILLUSTRATIONS OMITTED] 2. If no buried metal object can be found, use your ground rods. Drive them in as far as you can. If you use the 6-ft, single secion rod, you'll have to use a sledgehammer See Opteron. to do the job. If you use the 8-ft, 3-section rod, you can Use slide hammer to drive it in. If you use a sledge sledge: see sled. hammer, use a drive head stud. [ILLUSTRATION OMITTED] If you cannot get the rods deep enough-below the frost line frost line n. The depth to which frost penetrates the earth. frost line 1. In regions where there is no permafrost, the maximum depth to which frost penetrates the ground in the winter. 2. and to the water table-install a cluster of shorter rods. Depending on the number of rods you have, you should install them around the perimeter of your shelter or generator in a triangle pattern. If you cannot install around the perimeter, use a star-pattern. The distance between rods should be 2-4 rod lengths. [ILLUSTRATION OMITTED] 3. Another option is to bury the rods horizontally. Dig a trench at least 2 1/2 feet deep. Install the ground rod horizontally or put at least 10 feet of 2 AWG (American Wiring Gauge) A U.S. measurement standard of the diameter of non-ferrous wire, which includes copper and aluminum. In general, the thicker the wire, the greater the current-carrying capacity and the longer the distance it can span. bare copper wire in the trench. [ILLUSTRATIONS OMITTED] 4. It is very important in cold weather to bond equipment and shelters located within arms length of each other to eliminate any hazardous voltage that may develop between them. If the equipment is not bonded, that voltage can use you as the conductor if you touch both pieces of equipment at the same time. [ILLUSTRATIONS OMITTED] --The grounding electrode electrode, terminal through which electric current passes between metallic and nonmetallic parts of an electric circuit. In most familiar circuits current is carried by metallic conductors, but in some circuits the current passes for some distance through a conductor should be as large as possible, at least 6 AWG. --The conductor should be copper. --Run the conductor as straight and as short as possible in a downward direction, Do not run the conductor up and over obstacles. [ILLUSTRATION OMITTED] --Minimize any twists, loops or sharp bends and remove all knots from the conductor. [ILLUSTRATION OMITTED] --Make sure the bonding surfaces are free of paint, corrosion, grease or dirt. --Never twist or tie a ground wire around a ground rod. Use the bolt or damp for a solid connection. If there is no bolt, then 24 tightly wound turns of stripped telephone wire Or other bare wire should hold the strap in place. This is a temporary measure only. Get a clamp when you can. --Think safety when installing ground rods. Wear goggles goggles, n the protective eyewear worn by dental personnel and patients during dental procedures. goggles see periocular leukotrichia. and gloves. [ILLUSTRATION OMITTED] |
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