I need another receptacle in the basement. Instead of tapping into a box on the ceiling (unfinished basement) and then dropping from the ceiling along the basement wall in EMT, I want to just tap an existing box, then run EMT parallel to the floor to another box 10 feet further down the wall. I can't find anything that prohibits this, but was wondering if I was missing something. As far as I can tell, this is ok. Please let me know it it isn't (or is). Thanks.