NEC 210.52 (D) Bathrooms. In dwelling units, at least one receptacle
outlet shall be installed in bathrooms within 900 mm (3 ft)
of the outside edge of each basin. The receptacle outlet
shall be located on a wall or partition that is adjacent to the
basin or basin countertop, or installed on the side or face of
the basin cabinet not more than 300 mm (12 in.) below the
countertop.

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