PVC under slab to Island?

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Re: PVC under slab to Island?

You can get bell ends for the PVC if you're worried about it.
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Or put on a TA and a bushing, but they're not required for what you're doing. It just makes for a neater intstallation.

[ March 15, 2005, 11:09 AM: Message edited by: paul ]
 
Re: PVC under slab to Island?

We were recently sent a letter from chief electrical inspector of Pasco County,FL
PVC conduit was one of the issues,as we know it has been required since 02 change but it was never enforced here.But as of 1/1/05 it is required.along with several other changes not in the NEC :eek:
 
Re: PVC under slab to Island?

But as of 1/1/05 it is required
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Allen, could you expand on that please? What exactly are they requiring? Terminating the pipe or putting clamps on where the wire enters or using UF?

Thanks,

Dave
 
Re: PVC under slab to Island?

Dave, the only thing that would be necessary to comply with the NEC would be to use UF.

It's simple, NM is only for use in dry locations.

The UF can be secured before it enters and after it leaves the chase, be it PVC, ENT, RMC, IMC, EMT, or what have you.

A chase subject to different temperatures will accumulate condensation whether it's above, below, or wrapped in poly under a slab.

Allen first brought this up a year ago

Roger

[ March 15, 2005, 04:39 PM: Message edited by: roger ]
 
Re: PVC under slab to Island?

Alllllrighty then!

I'll start using UF! :eek:

I enjoy learning here...except when I learn I've been doing something wrong! :roll:

Thanks again,

Dave
 
Re: PVC under slab to Island?

Roger you are correct it all comes down to type of conductors under a slab.We cannot encase in concrete must be under the bisquen,so in direct contact with earth thereby conductors listed for a wet location ;) We set J boxes behind the frige but that causes its own problems 1 ct for dw,1 for disp.a gfci and usually a family room ct,
 
Re: PVC under slab to Island?

Issue over not being in direct contact with concrete is that slabs tend to crack,would not want my pipe cracking with it.Is a pipe under the plastic underground ? or is it above ground ? Like i said,i have had reason to pull old nm out of floor boxes or islands after the house was on fire and it was not harmed in any way.I believe it is not underground and not in a WET location,damp yes but if we worry about that we better start doing bathrooms in uf.Where does to code say i cant run pvc on top of dirt ?
 
Re: PVC under slab to Island?

Wait a second...Table 300.5 Minimum Cover Requirements 0-600 volts

Location of wiring method: Under a building

Column 1 through 5 all say 0 inches

I thought zero inches meant it can be IN the concrete. Am I wrong about that too?!?

Dave
 
Re: PVC under slab to Island?

Ok the way we do this is put the pipe under the plastic ,so there is 0 coverage but it is not in the concrete.Yes the pvc is in direct contact with the dirt but this does not make it a wet location.
 
Re: PVC under slab to Island?

Originally posted by jimwalker:
Ok the way we do this is put the pipe under the plastic ,so there is 0 coverage but it is not in the concrete.Yes the pvc is in direct contact with the dirt but this does not make it a wet location.
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Jim if you see it as a wet location or not does not matter. It is a wet location per the NEC.

There is only a couple of reasons not to use UF.

You are to forgetful to have a roll in the truck or you like to 'get away with stuff'.

I think you are wrong to get on this forum and say things like;

Originally posted by jimwalker when told of a violation:
yes Bob it is,but it has been passing down here for as long as i been wiring.
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Originally posted by jimwalker:
As far as admitting its wrong to use nm i have no problem admiting the letter of code says its a violation.Is it a wet location as per article 100 i say no.Has it caused any problems ? Not that i ever seen.
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What is your point Jim? :mad:

How are you helping anyone by telling us you regularly violate the code but you don't care because you have not seen any problems? :mad:

[ March 15, 2005, 05:37 PM: Message edited by: iwire ]
 
Re: PVC under slab to Island?

apparently our inspectors have agreed with my method and that of hundreds of other ec.I am not convinced it is a wet location.Where do you find that ruling ?
 
Re: PVC under slab to Island?

Jim

Originally posted by jimwalker:
apparently our inspectors have agreed with my method and that of hundreds of other ec.I am not convinced it is a wet location.Where do you find that ruling ?
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Well not all the inspectors are making this mistake, see what Allen has brought to the table today and a year ago; or does this just apply to others and not you?

As far as the wet location, don't you read the other posts in a thread?

Roger

[ March 15, 2005, 06:06 PM: Message edited by: roger ]
 
Re: PVC under slab to Island?

Originally posted by jimwalker:
I am not convinced it is a wet location.Where do you find that ruling ?
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Jim in the slab or in the dirt under the slab is a wet location, I do not need a ruling all I need is the NEC

Article 100
Location, Wet. Installations under ground or in concrete slabs or masonry in direct contact with the earth; in locations subject to saturation with water or other liquids, such as vehicle washing areas; and in unprotected locations exposed to weather.
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There is an endless list of things we code do and not get caught we are supposed to be professionals.
 
Re: PVC under slab to Island?

Actually i have yet to see that letter.Allen if you can post it please do.Being i am now working for a commercial only contractor i would not be involved in this type of install anymore.I was not trying to confuse any newbies.Just stating that this was passing and i never was trying to hide it or just get away with it.There are lots of things violated that inspectors never inforce.And if running nm in this fashion is a violation i will stop doing so.We learn by getting red tagged.If it passes we assume it meets code.
 
Re: PVC under slab to Island?

Thats the final straw Jim ,all my notes that I have been taking down from you the past year and a half are going straight in the trash can.
 
Re: PVC under slab to Island?

Jim,
We learn by getting red tagged.If it passes we assume it meets code.
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all though that may be true it is mighty lame.

Most here want to know the right way before they get tagged, and even point out a problem to an inspector, but I guess your happy just having someone tell you your OK right or wrong. :roll:

Why did you flip flop on the above and below the poly in your posts trying to justify yourself?

Roger
 
Re: PVC under slab to Island?

Originally posted by jimwalker:
.There are lots of things violated that inspectors never inforce.
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Again Jim what is your point here? :mad:

Have you no sense of responsibility?

Originally posted by jimwalker:
We learn by getting red tagged.If it passes we assume it meets code.
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Don't speak for all of us, many of us actually keep an NEC with us on the job and look at it from time to time.

Next month I will be attending a code change class, all of us in MA are required to take a class each code cycle in order to maintain our licenses.
 
Re: PVC under slab to Island?

That will deeply sadden me but do as you wish.This forum is for opinions and we will never all have the same.If we did there would be no need for this forum.We all read the nec a bit differently and arive at different opinions as to what it said.If the answers were black and white we would have 1 question and 1 answer and would not see dozens of replies.
 
Re: PVC under slab to Island?

"Why did you flip flop on the above and below the poly in your posts trying to justify yourself?

Roger "
Where do you find that i said the pvc was on top ?
 
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