New York State Master Electrician Practice Exam

What is not required to be marked on signaling wire cable?

1. Current rating

2. Color coding

3. Voltage

4. Manufacturer information

The correct answer is: Voltage

In the context of signaling wire cable, it's important to understand that specific markings are required to ensure safety and functionality. Among the options, voltage marking is not typically required on signaling wire cables. This is primarily because signaling wire, often used for low voltage applications like alarm systems, intercoms, or remote controls, operates under the assumption that the voltage levels are inherently understood based on the intended application, rather than needing explicit labeling. The necessity for current rating, color coding, and manufacturer information is rooted in safety and standardization. Current ratings must be provided to ensure that the wire can handle the power load without overheating. Color coding is crucial as it allows for identification of different circuits or functions within a system, aiding in installation, maintenance, and troubleshooting. Manufacturer information is needed for traceability, warranty matters, and ensuring compliance with standards or regulations. Therefore, while the other options focus on essential aspects of wire identification and safety, voltage marking is less critical for signaling wire cables.