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Old 04-13-2013, 08:29 PM   #1
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romex across the face of top plate?


Hey guys back again! I'm running the wire in my shop (staying unfinished) finally and can't remember if its ok to run it across the face of the top plate instead of drilling up through it.

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Old 04-13-2013, 08:56 PM   #2
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romex across the face of top plate?


Not if you ever decide to do a ceiling!

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Old 04-13-2013, 09:10 PM   #3
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romex across the face of top plate?


Nah it will stay unfinished. Just didn't know if that was against code.
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Old 04-13-2013, 09:14 PM   #4
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romex across the face of top plate?


I would still drill them, you know, just in case!
I think it would look better that way.
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Old 04-13-2013, 09:39 PM   #5
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romex across the face of top plate?


It's just that their all load bearing walls. It's not a big building though so maybe it doesn't matter as much. Would I need those metal plates that go across?
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Old 04-13-2013, 11:03 PM   #6
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romex across the face of top plate?


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It's just that their all load bearing walls. It's not a big building though so maybe it doesn't matter as much. Would I need those metal plates that go across?
If you drill through the plate, you shouldn't have need of the stud plates; they're used mainly if we run cable through notches (instead of holes).
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Old 04-13-2013, 11:53 PM   #7
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romex across the face of top plate?


Metal plates for wire protection are not needed if "... the edge of the hole is not less than 1 1/4 inches from the nearest edge of the wood member." NEC 300.4

You can make a hole in the top plate up to 50% of it's width with no structural problem. A 1/2" hole for romex is nothing.

thank you to stickboy1375 for this link to "Notching and Boring - IBC Section 2308 & IRC R502.8 - R802.7.2."

http://www22.pair.com/routt/building...s/notching.pdf

this is the top plate section.

R602.6.1 Drilling and notching of top plate. When piping or ductwork is placed in or partly in an exterior wall or interior load-bearingwall, necessitating cutting, drilling or notching of the top plate by more than 50 percent of its width, a galvanized metal tie of not less than 0.054 inches thick (1.37mm) (16ga) and 11/2 inches (38mm) wide shall be fastened to each plate across and to each side of the opening with not less than eight 16d nails at each side or equivalent. See Figure R602.6.1. Exception: When the entire side of the wall with the notch or cut is covered by wood structural panel sheathing.
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Old 04-14-2013, 06:59 AM   #8
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romex across the face of top plate?


Wow! How do you get 8 16s in the edge of a 2x without busting it to pieces!?!? So it's saying I do need the plates even with a hole?
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Old 04-14-2013, 08:36 AM   #9
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romex across the face of top plate?


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Wow! How do you get 8 16s in the edge of a 2x without busting it to pieces!?!? So it's saying I do need the plates even with a hole?

whats 8 16's ???
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Old 04-14-2013, 09:29 AM   #10
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romex across the face of top plate?


8 16 penny nails.
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Old 04-14-2013, 10:14 AM   #11
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romex across the face of top plate?


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...So it's saying I do need the plates even with a hole?
No. Only if the hole is larger than 50% of the width. 50% is a 1 3/4" hole in a 2x4. Or if the hole is closer than 1 1/4" from the edge, you need a protection plate (no nails).

Put a 1/2" hole in the middle and you need nothing.
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Old 04-14-2013, 04:56 PM   #12
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romex across the face of top plate?


The biggest hole you could put in the center of the 2x4 stud while being an 1-1/4" away from both edges of the stud (and not requiring a nail plate) is 1" (3 1/2" - 1 1/4" - 1 1/4" = 1"). Anything bigger or closer than 1-1/4" to the edge of the stud needs a nail plate.

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