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Old 03-06-2009, 01:17 PM   #1
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FMC types?


HI;

I'm putting in some recessed lights, and I think the Smurf I often used in non-exposed locations is a little bit inflexible for connecting the lights and is going to be difficult to work with.

I was thinking of trying some FMC for the lights. I remember watching a video here a member posted a couple weeks ago showing how flexible it was.

I look at the Flexible metal conduit at home depot briefly and it appeared that there were multiple types that all looked similar, some seemed more flexible than other, but all looked like the FMC.

Are there various types of FMC or is it made out of different materials? If so, which is the most flexible and easiest to work with?

I prefer just a conduit that I can push my own wires in.

Thanks
Jamie

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Old 03-07-2009, 12:03 PM   #2
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FMC types?


The trade name is "greenfield". Its an uncoated flexible metal conduit that you put your own wires in. I cannot vouch for the flexibility. It would be a good choice for lighting.
Or you could just go and get some MC cable at HD and be done with it.

Make sure you get the right fittings.

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Old 03-07-2009, 01:21 PM   #3
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There is aluminum and steel... or as posted others contain the wires and these are type AC or MC
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Old 03-09-2009, 11:48 AM   #4
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FMC types?


Thanks guys. I ended up picking up a roll of the MC style 12-2 with ground. I am going to use it for my light fixtures. I feel alot better about using it than I do about just plain old romex.

Thanks again
Jamie
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Old 03-09-2009, 02:37 PM   #5
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FMC types?


Before I pulled all of that romex I should have considered mc...oh well.
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Old 03-09-2009, 03:44 PM   #6
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FMC types?


Quote:
Originally Posted by jamiedolan View Post
Thanks guys. I ended up picking up a roll of the MC style 12-2 with ground. I am going to use it for my light fixtures. I feel alot better about using it than I do about just plain old romex.

Thanks again
Jamie
Did you have a bad experience with NM as a kid?
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Old 03-10-2009, 10:39 AM   #7
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Quote:
Originally Posted by jerryh3 View Post
Did you have a bad experience with NM as a kid?
Yea, but not when I was a kid, Just back in January. I watched the Romex at my parents melt and almost start the house on fire.

FMC types?-img_5191.jpg

FMC types?-img_5192.jpg

FMC types?-img_5201.jpg

I did get to also see what happened to the wires in the conduit (EMT) they were destroyed, but there was no molten plastic dripping everywhere, it all staying in the conduit, and the conduit was unharmed.

So yes, an irrational fear of romex perhaps. Honestly, even considering my romex avoidance, I have still used a bit of romex here and there in my own house. I just feel better overall with something more substantial. (EMT, or ENT and now some MC).

Jamie
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Old 03-10-2009, 11:20 AM   #8
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FMC types?


What was the cause of the melting?
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Old 03-10-2009, 12:13 PM   #9
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FMC types?


Quote:
Originally Posted by jerryh3 View Post
What was the cause of the melting?

If I remeber correctly, a ground shorted to the unfused SE conductor and traveled through the romex grounds to get to ground. I think they had to have the poco cut power at the x-former cutout.

I may be wrong how the story went...
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Old 03-10-2009, 12:23 PM   #10
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Quote:
Originally Posted by rgsgww View Post
If I remeber correctly, a ground shorted to the unfused SE conductor and traveled through the romex grounds to get to ground. I think they had to have the poco cut power at the x-former cutout.

I may be wrong how the story went...
I guess that will do it.
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Old 03-11-2009, 02:50 AM   #11
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Quote:
Originally Posted by jerryh3 View Post
I guess that will do it.
Close. He shorted the 4awg to the water meter. The increadiable heat generated melted the insulation on all the cables in the panel and several piece of romex new the panel along with THHN in emt melted down, presumably from the transfer of heat. It smelled horriable in there. Burning wire smell.

Jamie

P.S. Forgot to mention a bad experience with Romex and a flex drill bit and my hand caught in the middle of the wire while the drill was winding it up at full speed.....

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