Question
The spare wire pair (white/yellow) of the KNX bus cable may be used for which of the following?
Answer
B — A DC SELV supply, or left with no connection at all
Correct: Permitted uses are no connection at all or a DC SELV supply.
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An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.A second KNX TP data signal
- B.A DC SELV supply, or left with no connection at all✓
- C.Voice communication
- D.A 230 V AC mains supply
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