(a) Electrical equipment in spaces containing machinery powered by, or fuel tanks for, gasoline or other fuels having a flashpoint of 43.3 [deg]C (110 [deg]F) or lower must be explosion-proof or ignition-protected, or be part of an intrinsically safe system.
(b) Electrical equipment in lockers used to store paint, oil, turpentine, or other flammable liquids must be explosion-proof or be part of an intrinsically safe system.
(c) Explosion-proof equipment and intrinsically safe systems must meet the requirements of Sec. 111.105 in subchapter J of this chapter. [CGD 85-080, 61 FR 997, Jan. 10, 1996; 61 FR 24465, May 15, 1996]