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Old 10-04-2012, 10:25 PM   #1
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Bending 2" Rigid Conduit


Hi Everyone,

Not sure if you remember what I'm doing, but I'm redoing my electric, from the weatherhead to the panel.

I've had everything I've done so far approved by the city building (electric) inspector and the ComEd (my power company) approval person. Panel and meter base is in and I'm ready to do the service entrance conduit.

Here is the layout of where it will go (meter is in the bottom right now)




My question has to do with the bends. I'll either have some one with a bender do it for me or try and rent one (from somewhere??).

Will I be able to do both bends on a single 10' conduit? Here is the dimensions. I guess I don't know what the radius of the bends are.
(The long run is 8 feet and half an inch.)




While I'm here, I'll also ask, how would you do the end of this run where the weather head will connect? Would you attach a 90 degree elbow so it sticks out perpendicular to the wall? Seems like it would stick out quite a bit. An LB with a nipple and weatherhead? Any ideas would be great!

Thanks for your help!!

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Old 10-04-2012, 11:04 PM   #2
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Bending 2" Rigid Conduit


What size conduit. Not possible on 1 1/4 and larger to get two bends and 8 feet straight.

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Old 10-04-2012, 11:25 PM   #3
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Bending 2" Rigid Conduit


2" conduit. I'm not sure if the schematic describes it properly or not but the 8' 1/2" would include half of each bend if that makes sense.
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Old 10-05-2012, 12:17 AM   #4
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Bending 2" Rigid Conduit


A couple of different ways to do it....

First off....you're going to need couplings...so...accept the fact and embrace it...

Second....if you don't have an hydraulic bender...you will need to use prebuilt sweeps....

Option #1....rent a hydraulic pipe bender.

Option #2.....Find a differnt way to run it...Any reason you can't use PVC?

Option #3......Move the panel over a bit....then you can do a 90 straight down to the meter....

Just so we understand the overall scope.....are you trying to reduce the visibility of the pipe?
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Old 10-05-2012, 04:49 AM   #5
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Bending 2" Rigid Conduit


Why 2" rigid?

Be careful with the distance your head is from openable windows. In WI we are required to keep the head and drip loop at least 3' away.

You are going to want siding (or whatever you are putting on the outside) up before you put the service on the side of the house.
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Old 10-05-2012, 05:41 AM   #6
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Bending 2" Rigid Conduit


I agree with others, why 2" rigid?

Irregardless of what you use, find a muffler shop, they should be able to bend any size metal pipe you need.

Edit: for a small fee, of course, but should be less than renting a bender.

Last edited by Gac66610; 10-05-2012 at 05:43 AM.
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Old 10-05-2012, 06:16 AM   #7
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Bending 2" Rigid Conduit


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Originally Posted by Gac66610 View Post
I agree with others, why 2" rigid?

Irregardless of what you use, find a muffler shop, they should be able to bend any size metal pipe you need.

Edit: for a small fee, of course, but should be less than renting a bender.
And the muffler shop can weld it for a one piece application. Getting it home is another matter.
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Old 10-05-2012, 06:47 AM   #8
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Bending 2" Rigid Conduit


Quote:
Originally Posted by Gac66610 View Post
I agree with others, why 2" rigid?

Irregardless of what you use, find a muffler shop, they should be able to bend any size metal pipe you need.

Edit: for a small fee, of course, but should be less than renting a bender.
The benders used by muffler shops use a tighter radius and won't comply the NEC.
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Old 10-05-2012, 06:48 AM   #9
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Bending 2" Rigid Conduit


Quote:
Originally Posted by Fairview View Post
And the muffler shop can weld it for a one piece application. Getting it home is another matter.
Nope. All connections shall be done with an approved, listed and labeled means.
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Old 10-05-2012, 06:49 AM   #10
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Bending 2" Rigid Conduit


Quote:
Originally Posted by wewantutopia View Post
Hi Everyone,

Not sure if you remember what I'm doing, but I'm redoing my electric, from the weatherhead to the panel.

I've had everything I've done so far approved by the city building (electric) inspector and the ComEd (my power company) approval person. Panel and meter base is in and I'm ready to do the service entrance conduit.

Here is the layout of where it will go (meter is in the bottom right now)




My question has to do with the bends. I'll either have some one with a bender do it for me or try and rent one (from somewhere??).

Will I be able to do both bends on a single 10' conduit? Here is the dimensions. I guess I don't know what the radius of the bends are.
(The long run is 8 feet and half an inch.)




While I'm here, I'll also ask, how would you do the end of this run where the weather head will connect? Would you attach a 90 degree elbow so it sticks out perpendicular to the wall? Seems like it would stick out quite a bit. An LB with a nipple and weatherhead? Any ideas would be great!

Thanks for your help!!
WHy not use PVC conduit? Hacksaw and a can of glue.
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Old 10-05-2012, 07:30 AM   #11
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Bending 2" Rigid Conduit


Wow, thanks for all the replies!

1st: This is an old picture. The polyiso is finished and the side is covered with vinyl now.

2nd: The meter base and panel are already installed; nothing is being moved.

3rd: Rigid is required per inspector. 200 amp, 3 @ 3/0 copper.

4th: ComEd (the power company) already came out and OKed all the locations etc.

5th: It's being run like this partly for location of the meter base relative to the breaker panel and partly to help hide the conduit (at least make it not so noticeable).

So it'll have to be done in 2 pieces huh? Bummer. What is the bending radius of the hydraulic bender for 2"?
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Old 10-05-2012, 07:56 AM   #12
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Bending 2" Rigid Conduit


Why 3/0 wire, when all that is required for a 200 amp service is 2/0?
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Old 10-05-2012, 08:00 AM   #13
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Bending 2" Rigid Conduit


Future proofing. We plan on a PV array in the future. Also, possible sub panel to the garage for electric vehicle charging (in the future). Or who knows what the future will bring with the ever increasing electronic world.

If I'm doing it, I'm going to do it in a manner that requires no rework in my lifetime.

Inspector requires the rigid, I'm electing to use the 3/0 (not required by the inspector but a suggestion).
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Old 10-05-2012, 08:17 AM   #14
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Bending 2" Rigid Conduit


As long as you understand its not required to be 3/0.
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Old 10-05-2012, 10:13 AM   #15
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Bending 2" Rigid Conduit


Well radius depends. Your only bending 45's so you would have to go center of bend for your measurement. I believe the takeup on a 2" 90 is 15 5/8. You could do the calculations but it would be much easier to do your first bend and lay it on the ground and get a measurement on the where the second bend falls on the next piece of pipe. Personally I would just rent a threader and buy two prefab 45's then cut and thread my straight lengths to suit. Way easier and probably cheaper. Not many folks have hydraulic rigid benders laying around. Up here you can find things like benders and threaders at a place called Stephenson rentals but I'm not sure they are in the states.

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