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relleston said:

KAIFLEX Product Page

what is the difference between FMC and FMT? how can I see a picture of the didderence?

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FMC, flexible metal conduit, commonly called Greenfield, is basically the same metal jacketing as Type AC or MC cable, but without conductors. It is available in both steel and aluminum jacketing, and I believe can go up to 4" in diameter.



It is not permitted in wet locations or where subject to physical damage. Reference Article 348.



FMT, flexible metal tubing, is kind of cheap looking stuff, but is similar in look to FMC. The thickness of the jacketing of FMT is much thinner, but the circular rings that comprise it are much tighter. This makes it very lightweight. FMT, also called PlenFlex, is used often in plenums and other potentially combustible areas due to it being smoke-tight and liquid-tight (though it is not permitted in hazardous locations). It is not permitted where subject to physical damage. The NEC does not mention wet locations, though I'm pretty sure that FMT is galvanized for protection from corrosion, so you probably won't have a problem with this application.



Reference Article 360.



Boy, that is about the driest post I think I ever made. Hope it was informative. By the way,

the title of this thread is not very helpful.

FMC, flexible metal conduit, commonly called Greenfield, is basically the same metal jacketing as Type AC or MC cable, but without conductors. It is available in both steel and aluminum jacketing, and I believe can go up to 4" in diameter.It is not permitted in wet locations or where subject to physical damage. Reference Article 348.FMT, flexible metal tubing, is kind of cheap looking stuff, but is similar in look to FMC. The thickness of the jacketing of FMT is much thinner, but the circular rings that comprise it are much tighter. This makes it very lightweight. FMT, also called PlenFlex, is used often in plenums and other potentially combustible areas due to it being smoke-tight and liquid-tight (though it ispermitted in hazardous locations). It is not permitted where subject to physical damage. The NEC does not mention wet locations, though I'm pretty sure that FMT is galvanized for protection from corrosion, so you probably won't have a problem with this application.Reference Article 360.Boy, that is about the driest post I think I ever made. Hope it was informative. By the way,