(57) An insulated conductor for high temperature use and methods of manufacture thereof.
The conductor (1) is insulated by at least three layers of insulation, the inner layer
(2) being made of a perfluoroalkoxy or a polytetrafluoroethylene resin compound, the
second layer (3) being made of a polyimide resin compound and the third layer (4)
being made of a perfluoroalkoxy, an ethylenetetrafluoroethylene copolymer or a polyvinylbidine
fluoride resin compound. The layers are coated or extruded over the conductor and
each other and preferably, the first layer is etched before the second layer is applied.
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