Current through Register Vol. 54, No. 45, November 9, 2024
Section 39.114 - Hazardous locations(a) If explosives, inflammable gas, or inflammable flyings normally exist in dangerous quantities, the parts at which sparking or arcing are liable to occur shall be enclosed so as to reduce the hazard as far as practicable. This enclosure shall be by any one of the following methods:(1) Placement in separate compartments or rooms.(2) Use of casings of enclosed type when inflammable dust or flyings are present.(3) Use of explosion-proof casings when inflammable gasses exist in dangerous quantities.(b) Casings shall be nonabsorptive and noncombustible, and if made of metal shall be permanently grounded if within reach of grounded surfaces. This section cited in 34 Pa. Code § 39.152 (relating to hazardous locations).