schedule 40 vs. 80 pvc conduit

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Old 03-23-10, 09:31 AM
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schedule 40 vs. 80 pvc conduit

I ran some UF cable out to a post light earlier and put part of it in schedule 40 pvc conduit. I placed it in conduit where it exited the house, went under a flower bed, and under a brick path.

Now I am reading some suggestions that schedule 80 should have been used where it went above ground and into the house. Is this correct? Does it help my case that it is not individual wires inside the conduit, so it has the added protection of the UF sheathing?

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Old 03-23-10, 09:43 AM
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I think sch 40 is fine for your application. Sch 80 is generally only required where the wire is subject to damage like vehicle traffic. A small hit with a flowerbed shovel is not that big of deal for sch 40 pipe.
 
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Old 03-23-10, 07:30 PM
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Most supply houses don't even stock schedule 80 PVC conduit. I also think the schedule 40 is fine.
 
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Old 03-23-10, 09:23 PM
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I had a project once where I tried to find about 100' of sch 80 in 3/4". None of the supply houses stocked it in sizes smaller than 1-1/4". I found out that Carlon makes it, but you can only order 10' lengths in a pallet of 1000 units!
 
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Old 03-24-10, 04:55 AM
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Whoa, ibpooks! That's a lot of conduit.

Okay, I feel better! Thanks, everyone!
 
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Old 03-24-10, 04:02 PM
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Originally Posted by ibpooks View Post
I found out that Carlon makes it, but you can only order 10' lengths in a pallet of 1000 units!
That's surprising. I've used 3/4" Sch 80 for my outdoor electric. I've had no trouble getting Sch 80 at the area big boxes. Home Depot for sure. I didn't really need the extra capacity of Sch 40, and 80 wasn't much more expensive.
 
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