Question
How is a KNX TP line supplied with bus voltage?
Answer
D — Each line needs its own power supply unit
Start 10 free questions
Free · No account · No payment card
An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.One PSU in the installation supplies every line through the couplers
- B.Bus devices are powered directly from the 230 V mains
- C.No PSU is needed if fewer than 21 devices are used
- D.Each line needs its own power supply unit✓
Full bank
Keep going with the full KNX Basic bank
Keep going with the full KNX Basic bank: unlimited timed mock exams, detailed answers, history. From €9 (one-time payment).
See pricing — from €9 →Want more?
Continue KNX Basic practice
Related questions
- What nominal system voltage does a KNX TP power supply unit produce and monitor?KNX Installation
- What is the minimum voltage a KNX TP bus device needs for safe operation?KNX Installation
- For at least how long can a KNX power supply unit bridge a short interruption of the mains?KNX Installation
- Why is a KNX TP power supply unit resistant to short circuits?KNX Installation
- Which set of output currents corresponds to available centralized KNX TP power supply units?KNX Installation