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Conduit Bending in 1928 #151879
05/15/03 01:27 PM
05/15/03 01:27 PM
Admin  Offline
Joined: Oct 2000
Posts: 3,481
[Linked Image]

[Linked Image]

[Linked Image] Thanks to Joe Goble! (aka mountainman)

Tools for Electricians:
Re: Conduit Bending in 1928 #151880
05/15/03 01:37 PM
05/15/03 01:37 PM
Bjarney  Offline
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
The article's unstated safety principles are commendable—necktie ends stuffed into shirt. Aaagh!

Re: Conduit Bending in 1928 #151881
05/15/03 01:43 PM
05/15/03 01:43 PM
Bill Addiss  Offline
Joined: Oct 2000
Posts: 3,890
That's why I always wear Bow-Ties when I'm doing a Conduit Job!

[Linked Image]

Re: Conduit Bending in 1928 #151882
05/15/03 03:14 PM
05/15/03 03:14 PM
iwire  Offline
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Is there another page that shows how to pull wire through the four bend 360 degree saddle?

Tough for us with THHN try it with cloth covered. [Linked Image]

Bob Badger
Construction & Maintenance Electrician
Re: Conduit Bending in 1928 #151883
05/15/03 07:01 PM
05/15/03 07:01 PM
John Steinke  Offline
Joined: Apr 2001
Posts: 518
Reno,Nv., USA
Yet another reason why Mr. Benfield should get a Nobel Prize.
Also- anyone know when the 360 degree rule first entered the code?

Re: Conduit Bending in 1928 #151884
05/16/03 05:36 AM
05/16/03 05:36 AM
ThinkGood  Offline
Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
360°? Try pulling through those figure-8s!

Re: Conduit Bending in 1928 #151885
05/16/03 09:22 AM
05/16/03 09:22 AM
Creighton  Offline
Joined: Jan 2002
Posts: 59
Hayward, CA
John S. :A 360 degree limit appeared in the Aug. 31, 1897 Rules of the Underwriters Association of the Middle Department, which predated the National Electrical Code. No record that I know of as to how they arrived at the four ninety limit. If anybody knows, I wouldl be interested. Creighton.

Re: Conduit Bending in 1928 #151886
05/16/03 12:12 PM
05/16/03 12:12 PM
George Corron  Offline
Joined: May 2001
Posts: 717
Lorton, Va USA
When I came into the trade....... uh, musta been 3-4 years ago [Linked Image] the old geezers used to slap me up side the head for asking that question.

Sidewall bearing pressure aside, the "instruction" I received was that it had nothing to do with how hard we had to pull, it had to do with manufacturing a coil, and what that would do to our systems. I think it's probably a bit of both nowadays, but both do have their valid arguments.


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