Portable electric equipment—TB/ALL.

Portable electric equipment must not be used in a hazardous location described in subpart 111.105 of this chapter except: (a) Self-contained, battery-fed, explosion-proof lamps approved by Underwriters Laboratories Inc., Factory Mutual Research Corporation, or other independent laboratory recognized by the Commandant, for use in a Class I, Division 1 location for the electrical group classification of the cargo; (b) Intrinsically safe equipment approved by Underwriters Laboratories Inc., Factory Mutual Research Corporation, or other independent laboratory recognized by the Commandant, for use in a Class I, Division 1 location for the electrical group classification of the cargo; and (c) Any electrical equipment, if: (1) The hazardous location is: (i) Enclosed; and (ii) Gas free; (2) The adjacent compartments are: (i) Gas free; (ii) Inerted; (iii) Filled with water; (iv) Filled with Grade E liquid; or (v) Spaces where flammable gases are not expected to accumulate; and: (3) Each compartment where flammable gas is expected to accumulate is: (i) Closed; and (ii) Secured. [CGD 74-125A, 47 FR 15230, Apr. 8, 1982]