Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login

Posted: 11/7/2012 10:05:36 AM EST
So I am a working electrician....I am showing my helper how to bend some 1/2 so he can go do something and leave me alone , Got his tying in switch legs, and outlet runs....
He can bend 90's/offsets and KINDA bend a 4 point. Here is he kicker...I can't explain the formula to bending a Shepard's hook

I always bend a 90, the come back and bend an offset on it. Sometimes I have to cut it, other times bend/tweak it.....but he wants to know "Why"
to everything...I can't explain it IS there a actual Formula? Say you need a 10" for a stub coming out of a brick wall.
Link Posted: 11/7/2012 5:03:43 PM EST
Bend a 90 then subtract your stub up from the size of your offset
Link Posted: 11/8/2012 8:49:36 AM EST


Ya lost me, Or my ADD is in high gear....so math...you have a 8 " stub coming out of brick wall, Now...I USED to over bend the 90 {say, 12 " 90} then slide bender back and bend back the 90 until it works...

I finally got into the habit of making a 90 and offsetting..so...with 8", bend on 30 deg. so mark it at 16" ?
Link Posted: 11/8/2012 8:52:29 AM EST
graybar sells them prebent
Link Posted: 11/9/2012 4:04:22 AM EST
Originally Posted By coldair:
graybar sells them prebent


Pfff...that ain't no fun Like using a pre-fabbed 90
Link Posted: 11/9/2012 5:59:14 PM EST

Originally Posted By hightech_redneck:
Originally Posted By coldair:
graybar sells them prebent


Pfff...that ain't no fun Like using a pre-fabbed 90

Which are nice to have when dealing with RMC...
Link Posted: 11/9/2012 6:31:23 PM EST
As an electrician with 18 years experience, I have no patience for an apprentice with no mechanical aptitude. Tell him don't ask me why just do what I tell you. He has five years to figure out the why on his own. As for the Shepard's hook formula, subtract the diameter of the pipe from the length of the ninety and bend an offset that big. So if you bend an eight in stub ninety in half inch emt you will need to bend a 7-1/2 inch offset. This is assuming you want the end of you ninety and the bottom of your raceway to be on the same plain.
Link Posted: 11/10/2012 5:12:17 PM EST
Originally Posted By VARifleman:

Originally Posted By hightech_redneck:
Originally Posted By coldair:
graybar sells them prebent


Pfff...that ain't no fun Like using a pre-fabbed 90

Which are nice to have when dealing with RMC...


Yea but bending it looks a hell of a lot better.


Link Posted: 11/10/2012 5:24:02 PM EST
Originally Posted By thebrain:
As an electrician with 18 years experience, I have no patience for an apprentice with no mechanical aptitude. Tell him don't ask me why just do what I tell you. He has five years to figure out the why on his own. As for the Shepard's hook formula, subtract the diameter of the pipe from the length of the ninety and bend an offset that big. So if you bend an eight in stub ninety in half inch emt you will need to bend a 7-1/2 inch offset. This is assuming you want the end of you ninety and the bottom of your raceway to be on the same plain.


Thanks you.....I do tell him to just do what I ask, but also try to explain why we do it so he will understand and not learn anything too...ya know?
Link Posted: 11/12/2012 11:24:30 AM EST
Originally Posted By electrojk:
Originally Posted By VARifleman:

Originally Posted By hightech_redneck:
Originally Posted By coldair:
graybar sells them prebent


Pfff...that ain't no fun Like using a pre-fabbed 90

Which are nice to have when dealing with RMC...


Yea but bending it looks a hell of a lot better.

http://i138.photobucket.com/albums/q267/joecbr/ar15/IMG_20120803_100137.jpg
http://i138.photobucket.com/albums/q267/joecbr/ar15/IMG_20120803_100150.jpg



That's some damn fine pipe work. I am bit rusty these days on the pipework. I am back in the field for the first time in 8 years.

Link Posted: 11/23/2012 3:28:48 PM EST
I suck at anything under 4"
Top Top