Other-than-Cardinal Conduit Elbows

[drcampbell]

Other than the local custom muffler shop, can anybody recommend a source of non-standard conduit elbows?
I might need to specify a 56.3° elbow. (to match an 8:12 roof pitch)

 

[LarryFine]

Sounds like a bend-your-own type of job.

 

[don_resqcapt19]

Any electrical contractor with a bender for that size conduit should be able to make that bend.
With a muffler shop you have to make sure that the bend radius is not less than the minimum permitted in Chapter 9, Table 2.

 

[petersonra]

There is a pipe supply place we use to get custom bends. They have a machine.

 

[wwhitney]

I might need to specify a 56.3° elbow. (to match an 8:12 roof pitch)

If you can get (2) 30s and are OK with a small out of plane offset, you can do that easily:

Use the (2) 30s to make a 60, put it on your plumb conduit and point it along the roof gradient. The angle will be too shallow and the conduit would hit the roof. Now rotate the elbow-elbow joint so the uphill end is as a steeper angle (less bend off plumb), while rotating the elbow-conduit joint so that the uphill end is still pointing along the roof gradient. Shouldn't take much adjusting to get from 60 degrees to 56.3 degrees.

You could obviously do that with a 45 and a 22.5 instead, but it will take more adjusting and give you a larger out of plane offset.

Obviously not as pretty or elegant as a custom bend, but quite simple and perhaps good enough for a roof.

Cheers, Wayne

 

[infinity]

What does "Other-than-Cardinal" mean?

 

[Coppersmith]

Back when I was a first year, I told my foreman with pride that I had learned to bend 1/2" EMT pretty accurately with a hand bender.

He pooh-poohed that and said any journeyman could bend EMT with his knee. Perhaps all you need is a knee.

 

[rambojoe]

Your supply house should have a camtrac or the sort...
Make the bend with 1/2" or even a length of solid gec wire, then any good bender can match your angles... no need to mention 56.3°

 

[K8MHZ]

Other than the local custom muffler shop, can anybody recommend a source of non-standard conduit elbows?
I might need to specify a 56.3° elbow. (to match an 8:12 roof pitch)

What size and type of conduit are you working with?

 

[hbiss]

Other than the local custom muffler shop, can anybody recommend a source of non-standard conduit elbows?
I might need to specify a 56.3° elbow. (to match an 8:12 roof pitch)

Have to laugh. You never heard of bending conduit? ANY competent mechanic in this trade should be able to do that with a stick of conduit with his eyes closed. I for one would never use factory ells unless absolutely necessary.

-Hal

 

[hbiss]

What does "Other-than-Cardinal" mean?

I think he is referring to other than standard factory ells of 22.5, 45 and 90 deg.

-Hal

 

[Knuckle Dragger]

Just for my own info. What size conduit do you want bent?
My eyes seem to be blind to the size

 

[petersonra]

Have to laugh. You never heard of bending conduit? ANY competent mechanic in this trade should be able to do that with a stick of conduit with his eyes closed. I for one would never use factory ells unless absolutely necessary.

-Hal

It is not real easy to bend large size rigid without a good machine.

 

[rambojoe]

A muffler shop will not be able to bend our stuff, regardless...it will be dimpled and crushed! If it isnt a emt/grc shoe, it will destroy it..

 

[petersonra]

A muffler shop will not be able to bend our stuff, regardless...it will be dimpled and crushed! If it isnt a emt/grc shoe, it will destroy it..

Some muffler shops are set up to bend some pretty serious pipe.

 

[LarryFine]

It is not real easy to bend large size rigid without a good machine.

"Someone need a pipe bent?"

 

[hbiss]

It is not real easy to bend large size rigid without a good machine.

Of course. That's why you factor in rental of a bender or subbing out the work.

But then I'm still waiting to hear what size conduit we are talking about.

-Hal

 

[rambojoe]

Some muffler shops are set up to bend some pretty serious pipe.

Not as serious as my pipe... plus they have the wrong stuff. If you want to have them bend your stuff then have at it... but- for what its worth, even they use the bone wire to transfer their bends...
Ask me how i know!

 

[petersonra]

Not as serious as my pipe... plus they have the wrong stuff. If you want to have them bend your stuff then have at it... but- for what its worth, even they use the bone wire to transfer their bends...
Ask me how i know!

I don't know we never tried having pipe bent by a muffler shop we always had it done by the pipe place up the street.

 

[drcampbell]

The project is still evolving, but it looks like it might be 2.73 inches outside diameter.