Which code represents the 14 Volt DC Local Battery?

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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 represents the 14 Volt DC Local Battery?

Explanation:
In signaling diagrams, different power sources are labeled with a V followed by a letter to identify where the voltage comes from. The local battery is designated with Vb, which is why the 14 Volt DC Local Battery is represented by Vb. This labeling helps distinguish the self-contained, standby power that backs up essential signaling equipment when the main supply isn’t available. The 14 V nominal value matches the operating needs of relays, lamps, and control circuits that must stay powered during outages. Other codes (like Vc or Vs) point to other power paths such as charging sources or the main external supply, not the local battery.

In signaling diagrams, different power sources are labeled with a V followed by a letter to identify where the voltage comes from. The local battery is designated with Vb, which is why the 14 Volt DC Local Battery is represented by Vb. This labeling helps distinguish the self-contained, standby power that backs up essential signaling equipment when the main supply isn’t available. The 14 V nominal value matches the operating needs of relays, lamps, and control circuits that must stay powered during outages. Other codes (like Vc or Vs) point to other power paths such as charging sources or the main external supply, not the local battery.

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