×
Follow Us
Results 1 to 3 of 3

Practice Test Question: MC Cable Bend Radius

    #1
  1. Join Date
    Mar 2017
    Posts
    15
    Reputation

    Practice Test Question: MC Cable Bend Radius

    The practice question reads:

    "Type MC Cable has a bending radius of ____ times the external diameter of the metallic sheathing."

    I put 7 times the external diameter and got it wrong.

    The question suggests go to NFPA 70 Article 330.24(B), but I could only find NEC Article 330.24(B) that says 7 times the external diameter of the metallic sheathing for interlocked type armor or corrugated sheath. This question doesn't say it is smooth sheathed wire, but that bend radius varies with the external diameter of the wire, which wasn't given. Why is 7 times wrong and what is the right answer?

  2. #2
  3. SecondGen's Avatar
    SecondGen is offline
    I push buttons.
    NETA Level III Pro Subscriber
    Join Date
    Jan 2014
    Location
    United States
    Posts
    231
    Reputation
    Quote Originally Posted by EricGoetz92 View Post
    The practice question reads:

    "Type MC Cable has a bending radius of ____ times the external diameter of the metallic sheathing."

    I put 7 times the external diameter and got it wrong.

    The question suggests go to NFPA 70 Article 330.24(B), but I could only find NEC Article 330.24(B) that says 7 times the external diameter of the metallic sheathing for interlocked type armor or corrugated sheath. This question doesn't say it is smooth sheathed wire, but that bend radius varies with the external diameter of the wire, which wasn't given. Why is 7 times wrong and what is the right answer?
    7 is the correct answer, I've posted a handy reference for cable bending radius below. This question needs to be updated!

    Name:  cable-multiplier-bending-radius.png
Views: 137
Size:  32.8 KB

  4. #3
  5. Join Date
    Mar 2017
    Posts
    15
    Reputation
    Quote Originally Posted by SecondGen View Post
    7 is the correct answer, I've posted a handy reference for cable bending radius below. This question needs to be updated!

    Name:  cable-multiplier-bending-radius.png
Views: 137
Size:  32.8 KB
    Thank you very much, I am definitely saving that chart.

Subscribe

Login or register to leave a reply!




Related Topics

  1. Practice Test Question: Negative Sequence
    By EricGoetz92 in forum NETA Level 3 Exam
    Replies: 3
    Last Post: 6 Days Ago, 07:36 PM
  2. Practice Test Question: Interfacial Tension
    By EricGoetz92 in forum NETA Level 3 Exam
    Replies: 3
    Last Post: 1 Week Ago, 08:13 AM
  3. Practice Test Question: Which relay is used to protect feeders?
    By EricGoetz92 in forum NETA Level 2 Exam
    Replies: 2
    Last Post: 1 Week Ago, 02:49 PM
  4. NETA II test question (cable area)
    By dbryce89 in forum NETA Level 2 Exam
    Replies: 1
    Last Post: February 15, 2018, 09:52 AM
  5. Correct test voltage for 5KV cable?
    By lfmontoyas in forum NETA Level 3 Exam
    Replies: 6
    Last Post: January 25, 2018, 02:18 PM

Related Content

Follow us


Explore TestGuy


NETA Certification Training


Help and Support