×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

solid wire and pull elbows

solid wire and pull elbows

solid wire and pull elbows

(OP)
I searched my code book for 2hrs the other night trying to find an old rule regarding the use of solid wire in conduit.
Maybe someone can help me here.
I think I read in my old Canadian code book years ago that you cannot use solid wire in pull elbows. But I cannot find any reference to it in my new code book.
Was this rule removed? Or did I just imagine it?
I am working with a contrator who loves solid wire. Mostly #12 and #10 awg. And the more wire in the pipe the better. This contractor also doesn`t understand the concept of a maximum number of bends between pull points. Major pain in the ass this stuff is. They also like tiny little pull elbows because they look better.
I don't understand their reasoning. The more room the better I say. A box is way roomier than a pull fitting and so much easier to work with.
I also think stranded T90 wire is the greatest thing since sliced bread.
I just spent a week pulling wire for a job that should have taken 2 days. I used to be able to push wires easily by myself with no help using stranded wire. Now I need help for every run with solid wire.
Why do people use this shit? Do they think they are saving money?
Can someone point me to a rule in the Ontario Electrical Safety Code please regarding the use and restrictions of use for solid wire?
 

RE: solid wire and pull elbows

What's a "pull elbow" - an LB fitting?  In the US, I'm unaware of any restriction related to solid wire.   

"Theory is when you know all and nothing works. Practice is when all works and nobody knows why. In this case we have put together theory and practice: nothing works... and nobody knows why! (Albert Einstein)

RE: solid wire and pull elbows

(OP)
not an LB.
A pull elbow is much smaller than an LB. Maybe 1/4 the volume of an LB.

RE: solid wire and pull elbows

Imagine a standard galvanized plumbing 90 degree fitting. Cut the back half of the fitting off at 45 degrees to the conduits. Large enough to give full clearance to the ID of each conduit. Cover with a dished cover.
See;
http://www.aifittings.com/i_8.htm

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: solid wire and pull elbows

Ah... should have remembered.  We never allowed their use, so I forget about them.   

"Theory is when you know all and nothing works. Practice is when all works and nobody knows why. In this case we have put together theory and practice: nothing works... and nobody knows why! (Albert Einstein)

RE: solid wire and pull elbows

I prefer solid wire because we get more consistant and stable terminations with it over stranded.

I am aware of no restrictions for either type in pull elbows, but do not have specific knowledge of the Canadian Electrical Code.

From Waross' reference though, it would make sense, there does not seem to be much turn radius available through those fittings.  I imaging using these meets the requirement for the number of bends between pulling locations, but what a terrible installation.

Sorry I can't be of any help.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources