MC cable

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Have you ever wrestled 3" or larger flex with 250kcmil or larger conductors into an angle connector? Talk about a need for some sort of anti short bushing! Though the lil' red devils are not required by the Mfgr. or the NEC I think its a good practice to use them.
Ps: not to be confused with AC cable where 320.40 requires the bushing. Im not 100% sure of the difference of the two...(mc) and (ac) but it sure confuses some of our local inspectors... as they do believe the bushings are required.
 
I wonder why they are required for AC cable?
Do you know the difference? Im not really sure...Metal Clad vs, Armored Clad....Ive read the def. for both, but I don't understand what really makes them so different.
 
POWER_PIG said:
I wonder why they are required for AC cable?
Do you know the difference? Im not really sure...Metal Clad vs, Armored Clad....Ive read the def. for both, but I don't understand what really makes them so different.
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If I had to guess I would say that it has something to do with the armor on AC cable being much tighter around the conductors than MC cable. This would make it more likely that the sharp edge on the armor could damage the conductors.
 
Pierre C Belarge said:
If the installer is using the proper fitting for MC cables, the fitting has been designed to perform the same function as the anti-short bushing (redhead). That is why the redhead is not required.
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That's the line from the classroom, now let me tell you what reality is... There is one particular MC connector that has an oval shaped opening in the bottom. Certain cables that it is clearly rated for will pass nearly completely through that hole. It doesn't self bush for crap! The so called "take all" connector, that takes them all, but doesn't do an especially good job at any of them.
 
mdshunk said:
That's the line from the classroom, now let me tell you what reality is... There is one particular MC connector that has an oval shaped opening in the bottom. Certain cables that it is clearly rated for will pass nearly completely through that hole. It doesn't self bush for crap! The so called "take all" connector, that takes them all, but doesn't do an especially good job at any of them.
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HEY...have you been spying in on my classes? :cool: :grin:


I did not say that they would work well, I am passing on the info why it is permitted for MC as opposed to AC cable. There a many products on the market with a listing that are marginal but still listed as suitable for whatever.
That is why we call this America, put the redhead in the MC if you do not like the other methods. ;)
 
Pierre C Belarge said:
HEY...have you been spying in on my classes? :cool: :grin:
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Yes, I was peeping in the windows, and I want to publicly encourage you to wear clothes from now on. Nobody wants to see that.
 
:grin:
mdshunk said:
Yes, I was peeping in the windows, and I want to publicly encourage you to wear clothes from now on. Nobody wants to see that.
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Marc
I am always trying to be on the cutting edge...so, I read that keeping their attention or doing something new was good, hence the no clothes thing. Do you think I should really put the clothes back on? ;)


Note:
This thread has really gone south. :grin:
 
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