NZS 1989:1965 PDF Download

The NZS 1989:1965 standard describes the specifications for protected-type non-reversible plugs, socket-outlets, cable-couplers, and appliance-couplers with earthing contacts for single-phase alternating current circuits up to 250 volts. The standard covers various ratings such as 5, 15, and 30 amps, and includes single and double-pole fused plugs specifically designed for ring main circuits.

The standard provides dimensions for interchangeability, construction, tests, gauge details, and dimensions of the plugs, socket-outlets, cable-couplers, and appliance-couplers. One key feature of these components is that they are non-reversible, meaning they can only be inserted into a socket or outlet in one specific orientation.

The standard also includes an appendix that outlines a complete system of key and keyway positions. This system ensures non-interchangeability between different supply systems and applications, thereby enhancing safety and preventing the use of incompatible components.

It is noteworthy that the NZS 1989:1965 standard is identical to the British Standard BS 196:1961, suggesting a harmonized approach between New Zealand and British electrical standards.