Insulated sodium conductor¿has it a future in britain?

Since early 1966, when the most recent developments in sodium conductor were announced, this material has been seriously evaluated to determine whether it has a place in the hierarchy of power cables. The recent increases in the prices of copper and aluminium conductors, resulting from the devaluation of sterling, have given sodium, which is indigenous, an economic entry into a market which demands high tandards of performance and safety. The adoption of techniques that allow the application of sodium conductors to distribution systems up to 33 kV should enable it to satisfy technical requirements also. However, the full advantages of economy and simplicity of use which the sodium conductor affords cannot be obtained until it is manufactured in Britain.