The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Industrail Control Panel bonding per 409.108
by sparkyinak
Yesterday at 06:29 PM
Calling all Non-US members!! (Non-US only)
by aussie240
12/07/16 02:39 AM
Photo Upload Tutorial
by DanK
12/06/16 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 10
sparkyinak 8
Texas_Ranger 8
Potseal 6
Who's Online
0 registered (), 236 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#44874 - 11/14/04 02:26 PM Reducing conduit size
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
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

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#44875 - 11/14/04 02:30 PM Re: Reducing conduit size
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
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.
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

Top
#44876 - 11/14/04 05:53 PM Re: Reducing conduit size
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
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
#+%*&".

Top
#44877 - 11/15/04 05:57 AM Re: Reducing conduit size
Steve Miller Offline
Member

Registered: 08/30/01
Posts: 322
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.

Top
#44878 - 11/16/04 01:24 PM Re: Reducing conduit size
DougW Offline
Member

Registered: 06/08/03
Posts: 1083
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.

Top
#44879 - 11/16/04 05:28 PM Re: Reducing conduit size
Roger Offline
Member

Registered: 05/18/02
Posts: 1779
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

Top
#44880 - 11/18/04 10:53 PM Re: Reducing conduit size
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
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?

Top
#44881 - 11/18/04 11:38 PM Re: Reducing conduit size
e57 Offline
Member

Registered: 05/27/03
Posts: 2837
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.
_________________________
Mark Heller
"Well - I oughta....." -Jackie Gleason

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals