2009 IRC
E3901.2 General purpose receptacle distribution. In every
kitchen, family room, dining room, living room, parlor, library,
den, sun room, bedroom, recreation room, or similar room or
area of dwelling units, receptacle outlets shall be installed in
accordance with the general provisions specified in Sections
E3901.2.1 through E3901.2.3 (see Figure E3901.2).
E3901.2.1 Spacing. Receptacles shall be installed so that no
point measured horizontally along the floor line in any wall
space is more than 6 feet 1829 mm, from a receptacle outlet.
E3901.2.2 Wall space. As used in this section, a wall space
shall include the following:
1. Any space that is 2 feet (610 mm) or more in width,
including space measured around corners, and that is
unbroken along the floor line by doorways, fireplaces,
and similar openings.
2. The space occupied by fixed panels in exterior walls,
excluding sliding panels.
3. The space created by fixed room dividers such as railings
and freestanding bar-type counters.