200 amp load center

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EXCEL12

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i have a job requiring 200 amp load centers, the previous contractor ran 3" emt to each location from the switch gear. the panels only allow a maximum of a 2-1/2" ko. is there a way to reduce from 3" - 2-1/2" that is permissable by code without purchasing a more expensive panel with a deeper enclosure?
 
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the problem is that some suites have 3-5/8" walls ( flush mount panel ) and some 5-1/2" thick walls ( flush mount ), if the previous contractor ran 2-1/2" emt as specified we would have no problem, thank you for your quick response, also i am a new member on the forum and am just learning to navigate.:)
 
Being concealed makes it tough, no way to add a box or conduit body.

All I can come up with is a 3" EMT connector to a 3" rigid coupling with a 3" x 2" reducing bushing to a 2" nipple to the panel.

There is no NEC rule prohibiting switching raceway sizes but some inspectors may not like the home made reducing set up.
 
do you have attic space or above 'T' bar space to mount the required size pull box. Maybe could get more than one feeder per box.

jerry in so. ca.
 
A JB or condulet body and an access door might work for you?

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access_door_open.jpg



or

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or

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or similar.
 
EXCEL12 said:
the panels only allow a maximum of a 2-1/2" ko.
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Are you saying that the largest factory-punched KO is 2.5"? Couldn't you use a 3" KO puller? I've never seen a panel less than 3.5" deep.
 
2.5 chase nipple thru the KO into a 3/2.5 reducer bushing into a 3" rigid coupling?

I have punched out a 3" KO in a "shallow" panel before. As long as the deadfront doesn't interfere you will be OK.
 
LarryFine said:
Are you saying that the largest factory-punched KO is 2.5"? Couldn't you use a 3" KO puller? I've never seen a panel less than 3.5" deep.
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Although most panel are 4" deep you only have 3.5" left inside the wall. If you put a 3" connector on the pipe, then I think you may bulge out the sheetrock. I have never done it but it would be a tight fit.
 
Dennis Alwon said:
Although most panel are 4" deep you only have 3.5" left inside the wall. If you put a 3" connector on the pipe, then I think you may bulge out the sheetrock. I have never done it but it would be a tight fit.
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That's not the worst thing I've ever seen. You could always shave the backside of the drywall to fit the connector, and/or add a second layer of drywall. Don't forget to turn the setscrews to the side. :)
 
celtic said:
What about all those pesky 1/2" KO's scattered all over the place?
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You punch the 2 1/2 inch KO out this way you wont have to worry about the pesky 1/2" ko's.... I have personally punched a few panels to 3", surface mounted panel but in any case it went fine....
 
200 amp panel

200 amp panel

Thanks For All Your Help. The Panel Does Not Have Enough Room For A 3" Emt Connector. There Was A 3" Ridgid Coupling At Floor Level. We Bushed Them With A 3" X 2-1/2" Threaded Bushing Then Used 2-1/2" Emt Connectors To The Panel.
 
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