Mobile home feeder conduit fill

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hbeery10

hbeery10

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Sardis, Ohio
I’m planning to use 2/2/2/4 mobile home feeder in underground in pvc conduit. Wire fill tells me 1-1/4” pvc is fine for that but since it’s twisted I would do at least 1-1/2” pvc. Is that typically what people use for that or should I go up to 2” pvc?


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No reason to go up to 2" unless there are a lot of bends. I would probably use 1 1/4" but 1 1/2" is just fine
 
I would not do less than 1-1/2". that wire is pretty stiff and if there is LBs and/or 90s, you'll be glad you didn't go smaller.
 
As I often say, IMO the plexing makes it easier to pull not harder because you dont have to worry about jamming. However, elaborating on Little Bill's post, note that LB's almost always have less fill than the conduit itself. 1 1/4 would be fine for MHF but you may want to use 1 1/2 LB's with reducers or go to 1 1/ 2 conduit.
 
No LB’s needed, probably 3 90’s per run. I don’t have much experience with MHF so that’s helpful to know that it should pull reasonably well. I definitely won’t go less than 1-1/2”, sounds like I don’t need to go to 2”. Thanks for the comments, always appreciated!!


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hbeery10 said:
No LB’s needed, probably 3 90’s per run. I don’t have much experience with MHF so that’s helpful to know that it should pull reasonably well. I definitely won’t go less than 1-1/2”, sounds like I don’t need to go to 2”. Thanks for the comments, always appreciated!!


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used 2-2-2-4 MHF twice recently...one was about 50 feet with two 90's. Other one was longer, maybe 150' with only one 90. Both were 1 1/4 and easy. You'll be fine all day with 1 1/2.
 
This may be obvious, but use sweeps instead of hard 90's. Some guys I used to work with learned this lesson the hard way.
 
I do these every week. For 150 amp or 200 amp mobile home feeders we pipe in 2” pvc and pull single strand conductors. We never use any type of jacketed multi conductor cable.
 
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