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#44874 - 11/14/04 02:26 PM Reducing conduit size
wewire2 Offline
Member
Registered: 11/14/02
Posts: 244
Loc: California
An inspector told me I could not reduce the size of conduit in a run except at the termination. The contractor ran a 2" PVC underground. At grade level I installed a Female Adaptor and a 2"x1" reducing bushing.
I then ran 1" sealtight to a small panel in a piece of equipment. The circuit was 3 #8,
1#10 Grd. The total length of the entire run was only about 12'. He said "It's somewhere in the code book". Can someone save me a hassle and let me know where to find that one?
Thanks
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#44875 - 11/14/04 02:30 PM Re: Reducing conduit size
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
The inspector can not find it because that rule does not exist.

While most times it is not a great idea it is not a code violation.
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Bob Badger
Construction & Maintenance Electrician
Massachusetts
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#44876 - 11/14/04 05:53 PM Re: Reducing conduit size
wewire2 Offline
Member
Registered: 11/14/02
Posts: 244
Loc: California
I agree. I have never run across that rule either. By the way, that was the same inspector I mentioned in another thread I started a while back. "Inspectors who are
#+%*&".
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#44877 - 11/15/04 05:57 AM Re: Reducing conduit size
Steve Miller Offline
Member
Registered: 08/30/01
Posts: 325
Loc: Loudoun Cty, VA
Try my classic response: "Thanks for pointing that out. When you get back to the office would you call me and tell me the code section so I can read up on it. I'd hate to get caught in the same mistake twice."

It usually works; plus he's at the other end of the phone now and it's easier for him to say he'll let it go when he's not face to face.
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#44878 - 11/16/04 01:24 PM Re: Reducing conduit size
DougW Offline
Member
Registered: 06/08/03
Posts: 1143
Loc: North Chicago, IL
As others have said - he's talking out of his errr, pants...

As long as your within limits for conductor fill (which you are) there's nothing in th Code that prohibits it.
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#44879 - 11/16/04 05:28 PM Re: Reducing conduit size
Roger Offline
Member
Registered: 05/18/02
Posts: 1716
Loc: N.C.
Tell the inspector he/she is looking from the wrong end, and that in reallity, you increased the conduit size and did not reduce it.

I know, and I apologize.

Roger
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#44880 - 11/18/04 10:53 PM Re: Reducing conduit size
wewire2 Offline
Member
Registered: 11/14/02
Posts: 244
Loc: California
I just got back from an out of town job
(3 days). I got called on one thing. No plastic bushings on 3" PVC Terminal adaptors.
The contractor oversized the underground conduit from plan specs from 2" to 3". The pull was 2 #1 and 1#8 Grd. So as you can can imagine there are three dinkey little wires coming out of a huge conduit, not even touching the edges. The inspector made me tear everything apart to install bushings. I believe in bell ends for feeding but do you always use bushings on PVC and is this a fair call?
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#44881 - 11/18/04 11:38 PM Re: Reducing conduit size
e57 Offline
Member
Registered: 05/27/03
Posts: 2876
Loc: S.F.,CA USA
I rarely use PVC/RNC, and dare I say don't often use bushings on it either, because often the only times I use it, it will have Bell End, and a steel conduit on the other. But yep, required.

352.46 Bushings.
Where a conduit enters a box, fitting, or other enclosure, a bushing or adapter shall be provided to protect the wire from abrasion unless the box, fitting, or enclosure design provides equivalent protection.
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Mark Heller
"Well - I oughta....." -Jackie Gleason
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