General Requirements

Examination, installation, and use of equipment [1910.303(b)]
[photo] Dayton wet/dry vacuum.

Electrical equipment for use in wet environments shall be labeled

Equipment is "labeled" if there is a label, symbol, or other identifying mark of a nationally recognized testing laboratory, such as Underwriters Laboratories (UL) attached to it

1910.303(b)(2) Installation and use. Listed or labeled equipment shall be used or installed in accordance with any instructions included in the listing or labeling.