A buried iron or steel plate used as a grounding electrode shall expose not less than _____ of surface area to exterior soil. Grounding electrode requirements are outlined in Sec. 250.52 of the 2011 ...
All Code references are based on the 2005 NEC. The grounding and bonding requirements in this column apply to solidly grounded systems that operate at not more than 600V, such as 120/240V, 120/208V, ...
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