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Old 11-08-2008, 04:19 PM   #1
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NEC - 348.10 /12 -What is an exposed location...


Code clarification please;

348.10 /12 -What is an exposed location that is not subject to physical damage?

If I have a piece of flexiable conduit that I run to my panel and it runs down the wall next to the panel (on the board the panel is mounted) to and connects in the side of the panel, doesn't that expose it to physical damage and violate the code?

Does BX / all flexiable EMT/ENT need to transition to ridgid before it would drop down below the joists to your panel?

Thank You kindly;

Jamie

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Old 11-08-2008, 05:04 PM   #2
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NEC - 348.10 /12 -What is an exposed location...


"Subject to physical damage" is a completely ambiguous term and is not defined in the NEC.

The code leaves this determination completely to the discretion of the authority having jurisdiction or their representative (usually the wiring inspector)

You can try to use common sense as to what locations may be subject to physical damage, but if you have a situation that you suspect as questionable, you may want to call the inspector and see what they will be expecting from you to pass inspection.

To answer your initial question, no, rigid is not usually necessary below joists in a residence.


Last edited by EBFD6; 11-08-2008 at 05:07 PM.
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Old 11-08-2008, 05:30 PM   #3
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NEC - 348.10 /12 -What is an exposed location...


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Originally Posted by EBFD6 View Post
To answer your initial question, no, rigid is not usually necessary below joists in a residence.
That's good to know that it is not necessarily prohibited to use flexiable to the panel, but disappointing to know that it is up to the discretion whatever inspector comes out that day to decide if the flexiable ENT running down the couple feet of the wall to my panel is legal or not.

Thanks
Jamie
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Old 11-08-2008, 05:39 PM   #4
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NEC - 348.10 /12 -What is an exposed location...


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Originally Posted by jamiedolan View Post
That's good to know that it is not necessarily prohibited to use flexiable to the panel, but disappointing to know that it is up to the discretion whatever inspector comes out that day to decide if the flexiable ENT running down the couple feet of the wall to my panel is legal or not.

Thanks
Jamie
Subject to physical damage is typically only an issue industrial applications, or areas subject to vehicle traffic (like on the outside of your house near a driveway, or in the garage), etc..

The chances that the area above your panel is "subject to physical damage" are pretty low, I would be 99.9999% positive that you will be fine with romex, mc, emt, fnmc or any other wiring method in your situation.
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Old 11-08-2008, 06:19 PM   #5
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NEC - 348.10 /12 -What is an exposed location...


Its a regional thing, here in the northeast there really never is a problem with protection from physical damage, here is a panel setup I did, notice the exposed SER cable on the right hand side. This would never be allowed in other parts of the US.



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Old 11-08-2008, 06:26 PM   #6
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NEC - 348.10 /12 -What is an exposed location...


Very nice work chris! Looks nice and clean. Whats the panel on the right? Is it a data cable distribution center?

Last edited by rgsgww; 11-08-2008 at 06:38 PM. Reason: added second part
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Old 11-08-2008, 06:36 PM   #7
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NEC - 348.10 /12 -What is an exposed location...


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Its a regional thing, here in the northeast there really never is a problem with protection from physical damage, here is a panel setup I did, notice the exposed SER cable on the right hand side. This would never be allowed in other parts of the US.
Looks like top knotch work Chris. In other area would you have run that same service entrance cable in EMT?

Is that a commercial setup or a really large home?

Jamie
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Old 11-08-2008, 06:41 PM   #8
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NEC - 348.10 /12 -What is an exposed location...


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Looks like top knotch work Chris. In other area would you have run that same service entrance cable in EMT?
Its actually the feeder from the generator, but to answer your question, not around here, its not required to be protected.

The service is a 320 amp, the feeders actually come in through the back of the panels.



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Is that a commercial setup or a really large home?

Jamie
It was a large home, actually the biggest 2 bedroom house I ever wired, it was a post and beam, money was no object on this job either, Everything was high end stuff.
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Old 11-08-2008, 07:42 PM   #9
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NEC - 348.10 /12 -What is an exposed location...


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Everything was high end stuff.

Let me guess...they ran rg/11q to the tvs?
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Old 11-09-2008, 09:14 AM   #10
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NEC - 348.10 /12 -What is an exposed location...


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Let me guess...they ran rg/11q to the tvs?
"They" would be me, and I only ran rg6 to the tv's, but I did run rg11 out to the demarc from the basement, it was a pretty long run, the funny thing is this driveway is about a mile long, so the owners refused to pay the cable company for the line coming off the street, ended up with satellite, and internet from the phone company.
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Old 11-09-2008, 09:18 AM   #11
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NEC - 348.10 /12 -What is an exposed location...


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Whats the panel on the right? Is it a data cable distribution center?

Yes, it was spec'd by the architect, but I refuse to use the inside guts, the box just makes it nice looking.

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