【Daily Topic】【Electrical Edition 20160918】
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Participation reward: 2 Wealth. Reward for correct answer: 9 Wealth. In areas with high soil resistivity, the methods that can be used to reduce grounding resistance include ( ). A. Use a multi-branch external grounding system; the length of the external connections should not be less than the effective length, which must meet the requirements specified in the standards. B. The grounding electrode should be buried in soil with low resistivity and at a shallow depth. C. Soil replacement can be employed. D. Resistivity reducers or soil replacement can be used. Correct answer: CD
In areas with high soil resistivity, the methods suitable for reducing grounding resistance include (A). A. Use a multi-branch external grounding system; the length of the external connections should not be less than the effective length, which must meet the requirements specified in the standards. B. The grounding electrode should be buried in soil with a low resistivity and at a shallow depth. C. Soil replacement can be employed. D. Resistivity reducers or soil replacement can be used
C. Use of soil replacement D. Use of resistivity reducers or soil replacement
ABCD~~~~~~~~
C. Use of soil replacement D. Use of resistivity reducers or soil replacement