wiring under subfloor

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fjleiter

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Trying to run outside lights in a porch that is being converted to a dining room. Outside wall is 2x4 construction. My wife wants outside lights on both side of exterior door. I can't go over the door as the header is there from top of door to support beam on exterior wall (not place to run wire through). The sub-floor is 2x4 construction joists sitting on top of a slab, can I run the wire through the 2x4 floor to get to the other side of the door? (ie: down the stud on right side of door, into 2x4 floor over to left side of door and back up ?)
 
You can, so long as there are no junction boxes that would get covered up.
 
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