Western Australian Current Regulations Western Australian Current Regulations (1) The mine operator
of a mine must ensure the following —
(a) any
earthing system installed in a quarry operation or an underground mine is
connected to the earthing system established at the surface of the mine by
means of a continuous earthing conductor;
(b) no
earthing electrode is installed in a quarry operation or an underground mine;
(c) the
neutral point of an alternating current electrical system is effectively
earthed to the main earthing system;
(d) an
earthing system that incorporates an impedance complies with the requirements
for protection against indirect contact in AS/NZS 3007:2013;
(e) any
single phase alternating current apparatus that is installed in a quarry
operation or an underground mine is supplied from a double wound transformer
having 1 pole of the secondary winding connected to earth.
Penalty for this subregulation:
(a) for
an individual, a fine of $7 000;
(b) for
a body corporate, a fine of $35 000.
(2)
Subregulation (1)(a), (b) and (e) do not apply to installations
in any parts of quarry operations that are safe distances from places where
electrical shot firing methods are employed.