Service riser and couplings

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GG

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Could someone refresh my memory on this one. On a 2" rigid service riser can you use couplings in the run of pipe? I thought I remember this being a code violation, especially if the riser supports the service drop.
 
GG said:
Could someone refresh my memory on this one. On a 2" rigid service riser can you use couplings in the run of pipe? I thought I remember this being a code violation, especially if the riser supports the service drop.
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I know our POCO rule book has rules on where couplings can be installed, especially if it supports the drop, but the NEC doesn't.

Check with your local POCO.
 
The top 10' of riser must be one piece, in my area at least. If the riser is more than 10' above the roof, it's gonna be guyed anyway.
 
I agree too check with the POCO. I would add one thing, common sense and planning are required here. If you need 11' 6" of riser don't install the full length of RMC through the roof and then decide that you need 19" more above the roof line so you screw in a nipple. When compared to a full length of RMC two sets of threads and a coupling are very weak.
 
Here, POCO sets the rules.

One of them says "no couplings above the first strap" which limits risers to under 13'.

I got tagged on this one and had to go back and violate NEC by a few inches in order to pass POCO inspection. I needed a full 13' to get my overhead clearance.

DSC01934.jpg
 
220/221 said:
Here, POCO sets the rules.

One of them says "no couplings above the first strap" which limits risers to under 13'.

I got tagged on this one and had to go back and violate NEC by a few inches in order to pass POCO inspection. I needed a full 13' to get my overhead clearance.
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I don't get it. Why did you move the strap instead of just adding it?
 
480sparky said:
I don't get it. Why did you move the strap instead of just adding it?
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He said the coupling must be before the first strap. If he added a strap at the upper strut, it wouldn't do him any good as the coupling would still be above the first strap.

Yet, I do have to wonder if by first strap, they are counting top down, or bottom up???
 
Smart $ said:
He said the coupling must be before the first strap. If he added a strap at the upper strut, it wouldn't do him any good as the coupling would still be above the first strap.

Yet, I do have to wonder if by first strap, they are counting top down, or bottom up???
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No, he said 'no coupling above the first strap'. I take that to mean that there's to be no couplings above the first strap down the riser.

220.221, what happens when, in order to get the POA up high enough to satisfy NEC clearances [230.24(B)], you need more than 13'?
 
Yeah...it took me a while to decipher their rule. No coupling above the first strap (first from the meter). Logic told me to add a strap and leave the existing one there. The more straps the better...right? Their specs say different so I removed the original strap. Typical dumbness.

If you must strap within 3" then the max height allowed is gonna be 13'.

If you need more.......????? Fortunately that all I needed on this job. If it comes up in the future, I will need to get special permission or go underground.
 
220/221 said:
Here, POCO sets the rules.

One of them says "no couplings above the first strap" which limits risers to under 13'.

I got tagged on this one and had to go back and violate NEC by a few inches in order to pass POCO inspection. I needed a full 13' to get my overhead clearance.

DSC01934.jpg
Click to expand...

How does this limit risers to 13 feet? Can't I order from the factory a 20 foot long piece of GRC TBE (thread both ends)???
 
Well....there's that :rolleyes:

I was referring to standard 10' stock.

And......I wouldn't think twice about going to a plumbing suppy house.:cool:
 
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