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------------------------------------------------ Which type of armored cable is listed under UL 4, a prescriptive standard, with permitted conductor sizes of 14 AWG through 1 AWG only?

A. AC
B. Continuous corrugated armor
C. MC
D. Steel wire armor

Answer :

Final answer:

The type of armored cable listed under UL 4 with permitted conductor sizes of 14 AWG through 1 AWG is MC (Metal-Clad) cable. This type complies with the necessary standards for various electrical applications. Understanding the specifications is crucial for electrical safety and installation practices.


Explanation:

Understanding Armored Cable Types

The question revolves around identifying the type of armored cable that is categorized under UL 4, a prescriptive standard. The options provided are:

  1. a. AC
  2. b. Continuous corrugated armor
  3. c. MC
  4. d. Steel wire armor

The correct answer is c. MC (Metal-Clad) cable. MC cable is specifically designed for use in various applications and is compliant with UL standards, including UL 4. It is constructed with insulated conductors that are enclosed within a metal sheath. The permitted conductor sizes of 14 AWG through 1 AWG make it versatile and suitable for a range of electrical installations.

Conclusion

Understanding the categorization and specifications of armored cables is essential for safe and effective electrical installations.


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