Question

During the installation check, how should the ends of the bus cables be marked?

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Answer

A — 'KNX TP' or 'BUS'

Correct: Bus cable ends should be clearly identified as KNX TP by marking them 'KNX TP' or 'BUS'.

Source

KNX Basic Course Documentation — 17.2 — p. 118

All proposed choices (exam context)
  1. A.'KNX TP' or 'BUS'
  2. B.With '230 V' to warn of the operating voltage
  3. C.No marking is required at the cable ends
  4. D.With the manufacturer's serial number only
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Last updated: 19 May 2026

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