【Joint Study*】【Electrical Version 20160223】
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. For low-voltage customers with three-phase four-wire power supply, the purpose of the auxiliary grounding of the neutral wire at the entry point of the supply line is ( ). A. Increase single-phase ground current B. Prevent damage to household appliances C. Reduce ground resistance
For low-voltage customers with three-phase four-wire power supply, the purpose of the auxiliary grounding of the neutral wire at the entrance of the service line is (B). A. Increase single-phase ground current B. Prevent damage to household appliances C. Reduce ground resistance
For low-voltage customers with three-phase four-wire power supply, the purpose of the auxiliary grounding of the neutral wire at the entrance of the service line is (B). A. Increase single-phase ground current B. Prevent damage to household appliances C. Reduce ground resistance
For low-voltage customers with three-phase four-wire power supply, the purpose of the auxiliary grounding of the neutral wire at the entrance of the service line is (B). A. Increase single-phase ground current B. Prevent damage to household appliances C. Reduce ground resistance