Practical talks on farm engineering : A simple explanation of many everyday problems in farm engineering and farm mechanics written in a readable style for the practical farmer . ndis the vital part of the whole rodding system,and too much care cannot be given to it. Thegrounding device should be buried at least tenfeet deep in moist earth, and should be per-fectly connected to the main rod by welding orsoldering. It should be thoroughly protectedfrom rust or other deterioration, and care shouldbe taken that the earth is closely packed aroundthe rod where it enters the ground. The bestgroundin
Practical talks on farm engineering : A simple explanation of many everyday problems in farm engineering and farm mechanics written in a readable style for the practical farmer . ndis the vital part of the whole rodding system,and too much care cannot be given to it. Thegrounding device should be buried at least tenfeet deep in moist earth, and should be per-fectly connected to the main rod by welding orsoldering. It should be thoroughly protectedfrom rust or other deterioration, and care shouldbe taken that the earth is closely packed aroundthe rod where it enters the ground. The bestgrounding arrangement is a large piece of metalor a very large bundle of wire, particularlybarbed wire. To show just how the rules laid down aboveshould be applied, we may take the case of abarn for example. Assume that an inexpensivesystem is desired, and so barbed wire is to beused. First, lay a double strand along theridge pole from the back peak to the forward LIGHTNING RODS AND RODDING 55 peak, then down the sloping edge of the roof tothe eaves, along the eaves, up the sloping edgeat the back end to the peak, down on the otherside and along the opposite eaves, up the remain-. Fig. 10.—The method of bending barbed wire to form an en-closing network for lightning protection ing sloping edge to the front peak where westarted from. Here we may cut the wire, leav-ing a length of four or five inches, which shouldbe tightly bound to the first wire with copper 56 FARM ENGINEERING wire. This joint should be flooded with the back eaves sufficient wire must be left toreach down to the grounding device. Wherethis ground wire crosses the other the two shouldbe bound together and soldered. About every eight feet along the ridge a crosswire is placed, extending down to the eaves wireon each side, the joints all being bound andsoldered. If the barn has a gabled roof, anotherwire should extend along the outer ridges, beingcarefully connected to every cross wire. Allthe wires must be fa
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Keywords: ., bookcentury1900, bookdecade1910, bookidpracticaltal, bookyear1915
