bundling mc????

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ryan1420

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what is the code ruling on bundling MC?

today i was on a job and the job foreman was getting ready for a ceiling inspection tomorrow when i noticed he had about twenty mc cables bundled together in a forty foot run all zip tied together. i didn't say anything because i wasn't sure, but what is the code for bundling MC or can anyone tell me if thats ok?

thanks!
 
ryan1420 said:
what is the code ruling on bundling MC?

today i was on a job and the job foreman was getting ready for a ceiling inspection tomorrow when i noticed he had about twenty mc cables bundled together in a forty foot run all zip tied together. i didn't say anything because i wasn't sure, but what is the code for bundling MC or can anyone tell me if thats ok?

thanks!
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Foreman is correct. Look at 310.15(B)(2) exception 5

Exception No. 5: Adjustment factors shall not apply to Type AC cable or to Type MC cable without an overall outer jacket under the following conditions:
(1) Each cable has not more than three current-carrying conductors.
(2) The conductors are 12 AWG copper.
(3) Not more than 20 current-carrying conductors are bundled, stacked, or supported on “bridle rings.”
A 60 percent adjustment factor shall be applied where the current-carrying conductors in these cables that are stacked or bundled longer than 600 mm (24 in.) without maintaining spacing exceeds 20.
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Dennis Alwon said:
Foreman is correct. Look at 310.15(B)(2) exception 5
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:confused:

Hmmm. What about...

...he had about twenty mc cables bundled together...
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Exception No. 5: Adjustment factors shall not apply to Type AC cable or to Type MC cable without an overall outer jacket under the following conditions:
(1) Each cable has not more than three current-carrying conductors.
(2) The conductors are 12 AWG copper.
(3) Not more than 20 current-carrying conductors are bundled, stacked, or supported on ?bridle rings.?A 60 percent adjustment factor shall be applied where the current-carrying conductors in these cables that are stacked or bundled longer than 600 mm (24 in.) without maintaining spacing exceeds 20.
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Isn't twenty cables at least 40 CCC's?

Also didn't verify number of conductors in each cable or conductor size.
 
I mis read I thought the OP was saying it was okay and the foreman wasn't happy with it. Anyway I left the article to show the code. I did something right.
 
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