【Daily Topic】【Electrical Edition 20160907】
Thread Content
Participation reward: 2 Wealth. Reward for correct answer: 9 Wealth. In which of the following ( ) situations is it necessary to provide an equipotential connection? A. When the impedance of the power supply network is too high, resulting in an excessively long time for automatic power disconnection and thus failing to meet the requirements for shock protection. B. When the low-voltage system uses an IT grounding type. C. When the same distribution box in a TN system supplies both fixed and mobile electrical equipment, and the power-disconnection time of the protective devices for the fixed equipment meets the shock protection requirements for the mobile equipment. D. To meet the special shock protection requirements in places such as bathrooms, swimming pools, and hospital operating rooms. Correct answers: AD
AD~~~~~~~~~
ACD,,,,,,,,
A. When the impedance of the power supply network is too high, resulting in an excessively long time before the power is automatically cut off, failing to meet the requirements for shock protection D. To meet the special shock protection requirements in places such as bathrooms, swimming pools, and hospital operating rooms