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20160114 One question per day

2016-01-14View Original

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20160114 Daily Question: The rewards are as follows: 1-3 points for participation, 3-5 points for correct answers. In which situations should a single-phase residual current protector not be installed? ( ) Multiple choice: A. TN-S system B. TN-C system C. TN-C-S system D. IT system B, D
Reply #22016-01-14
BD~~~~~~~~~~~~~~~~~~~~
Reply #32016-01-14
B.TN-C system D.IT system
Reply #42016-01-14
The situations where a single-phase residual current protector should generally not be installed are (A, B, C). Multiple choice: A. TN-S system B. TN-C system C. TN-C-S system D. IT system
Reply #52016-01-14
The situations where a single-phase residual current protector should generally not be installed are (B D). Multiple choice: A. TN-S system B. TN-C system C. TN-C-S system D. IT system
Reply #62016-01-14
The situations where a single-phase residual current protector should not be installed typically include (B.TN-C system).

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Translated at 2026-07-21 00:58:19

Original: https://bbs.hcbbs.com/thread-1536608-1-1.html

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