Question
Below which voltages is NO special protection against direct contact required?
Answer
D — 25 V AC or 60 V DC
Correct: These are the limits stated for omitting direct-contact protection.
Source
KNX Basic Course Documentation — 1 — p. 96
All proposed choices (exam context)
- A.50 V AC or 120 V DC
- B.60 V AC or 25 V DC
- C.30 V AC or 30 V DC
- D.25 V AC or 60 V DC✓
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