S-2.1, r. 14 - Regulation respecting occupational health and safety in mines

Section 490 Disposition versions

2012-09-01

490. A transformer of the dry type, naturally cooled and having Class A insulation, may not be installed underground.

For the purposes of this section, “Class A insulation” means insulation providing protection at least equal to that of one of the following materials:

(1)  cotton, silk, paper or any other similar organic material impregnated in dielectric liquid or immersed in such liquid;

(2)  moulded or laminated materials containing cellulose, phenol resins or other resin with similar properties;

(3)  films and foils of cellulose acetate or any other by-product of cellulose with similar properties;

(4)  varnishes and enamels applied to conductors.

O.C. 213-93, s. 490.