【Daily Topic】【Electrical Edition 20160829】
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Participation reward: 2 Wealth. Reward for correct answer: 9 Wealth. Local equipotential connections should include ( ). A. Grounding conductors of lightning protection devices B. Outer coating of thin-walled steel pipes C. Metal pipes of utility facilities D. Metal structure of buildings Correct answer: CD
Local equipotential bonding shall include (CD). A. Grounding conductors of lightning protection devices B. Outer surface of thin-walled steel pipes C. Metal pipes of utility facilities D. Metal structure of buildings
C. Metal pipes for utilities D. Metal structures of buildings
Local equipotential bonding shall include (CD). A. Grounding conductors of lightning protection devices B. Outer coating of thin-walled steel pipes C. Metal pipes of utility facilities D. Metal structure of buildings
I chose ABD because all grounding points need to be gathered together; the common metal railing may not have a grounding point
A. Grounding conductor of lightning protection device