Ufer Grounding -
Countless tests indicate that many poultry houses do not have adequate grounding systems on their farms. By installing Ufer grounding systems on farms the resistance to ground can be lowered to an acceptible level and strengthening the grounding integrity of the electrical system. The Ufer ground is accepted by the National Electrical Code as an additional method of grounding and is defined as follows:
Concrete-Encased Electrode. An electrode encased by at least 2 inches (50.8 mm) of concrete, located within and near the bottom of a concrete foundation or footing that is in direct contact with the earth, consisting of at least 20 feet (6.1 m) of one or more steel reinforcing bars or rods of not less than 1/2 inch (12.7 mm) diameter, or consisting of at least 20 feet (6.1 m) of bare copper conductor not smaller than No. 4 AWG.
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