【Daily Topic】【Electrical Edition 20160831】
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This post was last edited by hesonchang214 on 2016-9-1 11:17. Reward for participation: 2 wealth points. Reward for the correct answer: 9 wealth. Which of the following statements is correct? ( ) A. Any switches and sockets in the bathroom must be at a distance of no less than 0.2m from the entrance to the shower enclosure, and they should have waterproofing and moisture-proofing measures. B. The grounding resistance of the independent grounding system in the program-controlled switching room should be at least 10Ω. C. It is strictly prohibited to use the earth as the working neutral wire. D. The IT grounding system should be equipped with insulation monitoring devices as well as alarm or indication systems for grounding faults. Correct answers: CD
C. It is strictly prohibited to use the earth as the neutral wire in operations. D. The IT grounding system should be equipped with insulation monitoring as well as grounding fault alarm or indication devices
The correct statements are (CD). A. Any switches and sockets in the bathroom must be at a distance of no less than 0.2m from the entrance to the shower enclosure, and they should have waterproofing and moisture-proofing measures.
B. The grounding resistance of the independent grounding system in the program-controlled switching room should be at least 10Ω.
C. It is strictly prohibited to use the earth as the working neutral wire.
D. The IT grounding system should be equipped with insulation monitoring devices as well as alarm or indication systems for grounding faults
B. The grounding resistance of the independent grounding system in the program-controlled switching room should be at least 10Ω.
C. It is strictly prohibited to use the earth as the working neutral wire.
D. The IT grounding system should be equipped with insulation monitoring devices as well as alarm or indication systems for grounding faults
A. Any switches and sockets in the bathroom must be at a distance of no less than 0.2m from the entrance to the shower unit, and they must have waterproof and moisture-proof measures in place
Which of the following statements about CD is correct? (CD)
CD. 、、、、、、、、、、
A should change 0.2 to 0.6, and B should replace 10 with 4