Question
May a cable intended for mains installation be used to wire the KNX TP network?
Answer
B — No, cables intended for mains networks may not be used for TP networks
Correct: The documentation prohibits reusing mains cable for TP installation.
Source
KNX Basic Course Documentation — 1.1 — p. 97
All proposed choices (exam context)
- A.Yes, any cable rated for 230 V is suitable for the bus
- B.No, cables intended for mains networks may not be used for TP networks✓
- C.Yes, provided the cable is green
- D.Yes, but only in dry rooms
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