Safety requirements for customer equipment

Surge arresters, Part 2: Metal-oxide surge arresters without gaps for a.c. systems

Lightning protection

Insulation co-ordination within low-voltage systems including clearances and creepage distances for equipment

Approval and test specification — Safety of information technology equipment including electrical business equipment

Recommends a simple system for the protection of electrical installations and connected equipment from transient voltages exceeding 2500 volt due to lightning discharges and switching.

AS 4070-1992

Recommended practices for protection of low-voltage electrical installations and equipment in MEN systems from transient overvoltages