sec.28Electrical protection for power outlets for low voltage electrical equipment

### sec.28 Electrical protection for power outlets for low voltage electrical equipment A coal mine’s electrical engineering manager must ensure a single-phase power outlet for low voltage electrical equipment at the mine has— earth leakage current protection of not more than 30mA sensitivity; or a device preventing its use by portable electrical equipment. Subsection (1) does not apply if the power outlet is the only outlet in an isolated electricity supply. In this section— isolated electricity supply means an electricity supply— other than the main electricity supply, that is totally insulated from conductive material; or that is— supplied with electricity from the main electricity supply; and totally isolated from the main electricity supply; and totally insulated from earth. (sec.28-ssec.1) A coal mine’s electrical engineering manager must ensure a single-phase power outlet for low voltage electrical equipment at the mine has— earth leakage current protection of not more than 30mA sensitivity; or a device preventing its use by portable electrical equipment. (sec.28-ssec.2) Subsection (1) does not apply if the power outlet is the only outlet in an isolated electricity supply. (sec.28-ssec.3) In this section— isolated electricity supply means an electricity supply— other than the main electricity supply, that is totally insulated from conductive material; or that is— supplied with electricity from the main electricity supply; and totally isolated from the main electricity supply; and totally insulated from earth. - (a) earth leakage current protection of not more than 30mA sensitivity; or - (b) a device preventing its use by portable electrical equipment. - (a) other than the main electricity supply, that is totally insulated from conductive material; or - (b) that is— (i) supplied with electricity from the main electricity supply; and (ii) totally isolated from the main electricity supply; and (iii) totally insulated from earth. - (i) supplied with electricity from the main electricity supply; and - (ii) totally isolated from the main electricity supply; and - (iii) totally insulated from earth. - (i) supplied with electricity from the main electricity supply; and - (ii) totally isolated from the main electricity supply; and - (iii) totally insulated from earth.