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Topic: Type MI cable

User: MIsnyde93, Location: Michigan

Asked on: Monday, January 13, 2025 at 5:20 pm EST
Answered on: Thursday, March 6, 2025 at 7:15 am EST

Question: The first question on my recent Journeyman exam was: How close must type MI Cable be secured within from a box or panels. Possible answers were 12, 24, 36, 72inches. 332.30(A) states that type MI shall be supported at intervals not exceeding 6 feet (72"). I could not find anything regarding it being secured coming out of a panel. Am i missing something or was 72" the correct answer?

You're right to be cautious and read carefully! Here's the breakdown: 332.30(A) does indeed state the 6-foot (72-inch) support rule for MI cable. This is the general rule for support intervals. However, you're missing a critical detail regarding terminations at boxes or panels. You are correct in that 332.30 (A) does not address that directly. Instead of 332.30(A), look at 314.17(C) Cables.314.17(C) basically says where cable enters a box, conduit body or enclosure, it must be secured to the box or fitting withing 12 inches of said box.

Therefore, the correct answer is 12 inches.In summary: Always remember to cross-reference the general rules with specific rules regarding boxes, panels, and terminations. It's a common trick on exams! Flag for review

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