Question
For the WAGO 243-211 connector: On the standardized KNX TP bus connector, which statement about the two parts is correct?
Answer
B — The plus part is red and the minus part is dark grey.
In the course, the connector has a red positive part and a dark-grey negative part, as on the WAGO 243-211. Other manufacturers, including ABB for XS/S 1.1, describe the connection as red/black. This naming difference is not a polarity difference: check +/− markings and the product manual instead of claiming that black always means only the cable conductor.
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An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.The plus part is red and the minus part is black.
- B.The plus part is red and the minus part is dark grey.✓
- C.The plus part is black and the minus part is red.
- D.Both parts are green, matching the bus cable sheath.
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