I'm running a u/g feeder via pvc from a combination meter/main panel on a customer owned pole approx. 160 ft. to a dwelling and will enter through the foundation wall. 200A service so it will be 3 2/0 cu conductors and a #6 EGC. The run has one 90 degree bend. My question concerns sizing the pvc conduit. I thought I'd use a sched.80 sweep 90 and sched 40 the remainder of the run. I was told that sched. 80 holds up to pull rope better. Tables 9 & 10 tell me that 2" pvc can contain up to 5 2/0 THWN for sched 80 and 6 2/0 THWN for Sched 40. Should I consider running larger PVC? I managed to borrow a tugger but this aspect of the job worries me the most. Don
Don't jump on me if I'm wrong. Would you not need 3/o copper for 200A or 4/o Al. 2/o copper is good for 195 amps. I don't know what kind of load you have on this but voltage drop might another reason to use 3/0.
If the service is on the pole then I would say the #6 EG would meet code. Or you could eliminate the EG and bond the 200a panel if conditions are met.
#39847 - 07/05/0411:11 AMRe: practical sizing of pvc
250.86Exception No. 3: A metal elbow shall not be required to be grounded where it is installed in a nonmetallic raceway and is isolated from possible contact by a minimum cover of 450 mm (18 in.) to any part of the elbow or is encased in not less than 50 mm (2 in.) of concrete.
I must do this quite often while running underground conduits.
If it is the sweep breaking the surface I simply continue with EMT or IMC to the enclosure to get the sweep bonded.
If it was me I would not plan on a tugger for this pull. I would plan on plenty of wire lube, a good rope and 3 people minimum by hand.
Two if pulling it with something else, we will use anything that drives (slower the better) to pull cables in.
Bob Badger Construction & Maintenance Electrician Massachusetts