Question
What generates the SELV voltage for the KNX TP bus?
Answer
C — A power supply with secure mains separation
Correct: The documentation states a power supply with secure mains separation generates the SELV voltage.
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An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.A direct tap off one mains phase
- B.The earthing system of the building
- C.A power supply with secure mains separation✓
- D.A battery inside each bus device
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