Liquidtight in concrete????

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james3838

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Newberry, SC
Hi folks, I am new to the forum and have a question already. I am currently in the process of installing a 200 amp residential service to replace a 100 amp service. The problem is getting the feeder from the meter socket/panel to the original panel inside the house. My question is can liquid tight flex be used to run a feeder and then buried in concrete. The application would be to run rigid metallic conduit from the meter socket to an area over the back porch slab, penetrate the slab and brick veneer of the house and use the liquid tight to go from just above the slab, through the slab and veneer, to under the residence. I cannot find a clear answer in the 2005 code book. All input would be appreciated
 
Has the DIYer feel to it.

I think you will have to get answers elsewhere as the forum rules do not allow answers to questions by DIYers.
 
Nope, No DYIer here, at least not with electrical. I am currently working part time on this side job for a Master Electrician, have been doing residential, commercial and industrial electrical work for over 15 years, and am currently enrolled in classes to prepare for my journeymans. This is not my residence. I just cannot find the answer to liquidtight encased in concrete anywhere and I want to make sure that everything is right when the inspector shows up. I have never run across this type situation before. I have adequate room under the house to install the new feeder but I dont have any way to get the feeder there other than go through an existing pad.
 
Thanks M73214. I had already read that article. I always refered to "direct burial" as being in earth and not "encased in concrete". That's what had me confused. I really would rather use rigid but I think I'll have to give this a try as it would make it so much easier. I'll pray that the inspector let's me slide with it. I've been dealing with him for a number of years now but cannot make contact with him this week for some reason. That's why I inquired here.....
 
230.43
You cannot use Liquidtight flexible metal conduit as a service wiring method.


Art 356 Liquidtight Flexible nonmetallic conduit (LFNC)

LFNC type B can be installed in concrete 356.42.
It is permitted for use in services, 230.43(16)

P.S. LFNC-B is the only LFNC that is readily available in supply houses today.
 
That's what I was thinking, but I read 230.43(16) and I read it to say you can.
Click to expand...
Six foot or less is permitted. The substantiation when this rule went into the code was..."sometimes its too hard for the installer to bend the conduit".
Don
correction
I looked at liquidtight flexible metallic conduit for the 6' limit. That limit does not apply to liquidtight nonmetallic flexible conduit.
 
Thanks for the input folks. I will only need app 3 ft to make the turn to get under the house. I will make sure that I use the type B and I should be within code. Nonmetalic liquidtight will be about the only way to make this work in this particular situation.
Funny how different people interpret the code differently. Sometimes it's pretty vague, especially when you have a situation like this that doesn't come up that often.
 
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