Queensland Consolidated Regulations Queensland Consolidated Regulations(1) Electricity for general supply must be alternating current having a nominal frequency of 50Hz.
(2) The standard voltage for electricity supplied at low voltage from a 3-phase system must be--
(a) between a phase conductor and the neutral conductor--240V; and
(b) between 2 phase conductors--415V.
(3) The standard voltage for electricity supplied at low voltage from a single-phase system must be--
(a) between a phase conductor and the neutral conductor--240V; or
(b) between the phase conductors--480V.