Changing raceways

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wireday said:
Thanks Dennis, what I wanted to know is what is a combination connector ?
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Got a mixture of terminologies flying around here. Eaton/Cooper/Crouse-Hinds calls them combination couplings.

http://www.cooperindustries.com/con...ts/catalog-pdfs/combination-couplings-emt.pdf

PS: As long as some of the MC armor with the marker tape underneath is intact, labeled individual conductors in the EMT are not required. See 310.120(B)(2). Someone has their panties waistband riding too high if they think that's enforceable.
 
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So when a combination connector says EMT to FMC that also includes MC ? that is what i would like to know, what is considered FMC ?
 
wireday said:
So when a combination connector says EMT to FMC that also includes MC ? that is what i would like to know, what is considered FMC ?
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No. To use it with MC it must be listed for use with MC... though there are many electricians out there that completely disregard the listing or know no better and use an FMC coupling or connector anyway.

FMC = flexible metal conduit

There is no substitute. Article 348 in the NEC.
 
wireday said:
Found a Bridgeport 280-DCX online, Says its listed for MC. Now to find it locally.
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So you are saying you're going to strip the MC except this short section to make the total length of conductors?

Roger
 
Smart $ said:
Incompatibility of the thread has little to do with it. It's simply a matter of listing compatibility. Consider the fact we use tapered thread mated with straight thread all the time with rigid or IMC conduit and standard couplings... but the tapered thread is always on the conduit and the straight thread is always on the coupling, the female side of the joint.
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it's not a problem in any case. half the time the imported
threaded fittings are so far out of tolerance they won't make up tight.

:rant:
 
Thank you for asking Roger, you know how it is, most jobs you don't really know what to do till you get there. I like understanding my options.
 
So my supply house has the Bridgeport 280 DC, the 280 DCX is listed for MC. The DC is listed for Flex? and even NM. I've never used FMC, do we just add our stranded THWN and treat it like MC? does it require antishort bushing?
 
wireday said:
So my supply house has the Bridgeport 280 DC, the 280 DCX is listed for MC. The DC is listed for Flex? and even NM. I've never used FMC, do we just add our stranded THWN and treat it like MC? does it require antishort bushing?
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Yes, you just install the conductors in the fmc just as you would a raceway of emt or some other raceway. We generally see anti shorts in fmc but I don't believe it is required.
 
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