Which code is for the 14 volt DC local common?

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Study for the Signal Maintainer Test. Practice with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which code is for the 14 volt DC local common?

Explanation:
The main idea is that in signaling wiring, a local common is the return path and reference point for a specific DC circuit. For a 14-volt DC control circuit, the code used to identify that return conductor is the one mapped to “local common” in the diagram’s legend. That mapping assigns Vc to the 14-volt DC local common, which is why it’s the correct choice. The other codes designate different circuits or voltages and do not represent the local common for the 14 V DC circuit. So, Vc is the label you’d look for on the diagram to find the 14-volt DC local common.

The main idea is that in signaling wiring, a local common is the return path and reference point for a specific DC circuit. For a 14-volt DC control circuit, the code used to identify that return conductor is the one mapped to “local common” in the diagram’s legend. That mapping assigns Vc to the 14-volt DC local common, which is why it’s the correct choice. The other codes designate different circuits or voltages and do not represent the local common for the 14 V DC circuit. So, Vc is the label you’d look for on the diagram to find the 14-volt DC local common.

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