conduit bending

[masterofsparks]

what is deduction for 1 inch ridgid

 

[don_resqcapt19]

That varies with the bender.

 

[e57]

what is deduction for 1 inch ridgid

Take-up deduction?
Usually printed on the side of the shoe for most benders - but you can easily find out by marking the conduit and shoe then make a test bend to find out. Make a registration mark before you bend - then bend it and measure from that to stub-up, center of bend and back of bend.

For an 1 1/4 EMT bender used as a 1" RMC bender most will be ~12" nothing in life is exact.....

For instance: This is a 5"deduction on 1/2" emt for an 8" stub up

Click 'next' through the rest of this leason for more interesting info:
http://www.porcupinepress.com/_bending/ConduitBending.htm
(FYI other people who have seen this I think they have up-dated it a little for conduit spacing...)

 

[cow5634]

back to back 90

back to back 90

how do you bend a back to back 90 with 1/2 rigid

 

[brian john]

About 1 year off your life if you run enough of it.

 

[480sparky]

how do you bend a back to back 90 with 1/2 rigid

Same way I bend back-to-back 90s on 3/4" EMT.

 

[dcspector]

About 1 year off your life if you run enough of it.

Ain't that the truth..............3 months of my life in a grain silo, middle of winter.

 

[captaincrab55]

Same way I bend back-to-back 90s on 3/4" EMT.

Would that be one 90 @ a time?....?

 

[480sparky]

Would that be one 90 @ a time?....?

Pretty much. I'm not talented enough to use two benders at one time. :grin:

 

[peter d]

I can hardly bend 3/4" rigid by hand....1"? Forget it...give me a bending machine!

 

[76nemo]

About 1 year off your life if you run enough of it.

Yeah, and some awful, awful hurting armpits!!!!!!!!! Hope you weigh more than me!

 

[electricalperson]

use a chicago bender

 

[76nemo]

use a chicago bender

Just as long as there is a working elevator:grin:

 

[electricalperson]

Just as long as there is a working elevator:grin:

i didnt use a chicago bender or any mechanical benderfor that matter in a long time. i just use the benfield style benders. my boss buys the 90 degree sweeps for anything larger than 1 1/4 emt

 

[cow5634]

wow that was helpful you guys are great

 

[76nemo]

Is that a sense of sarcasm?

 

[76nemo]

A crew chief is asking us how to do a back to back on a NEC forum???