Abstract: An electrical cable system and a method for manufacturing an electrical cable system (1) has an electrical cable (10) containing a conductor core (2). The method for installing the electrical cable system of a longitudinally expandable contractible element (1?,6) includes disposing a secondary element (3) over the electrical cable so as to give the electrical cable substantially attached undulations (100) forming an additional length. The electrical cable system is installed by clamping at least at two points to the longitudinally expandable-contractible elements. The secondary element is handled after the clamping so as to release the attachment of the undulations thereby converting the additional length into a free to be used excess length.

Abstract: The present invention relates to an electrical cable system and a method for manufacturing an electrical cable system (1) comprising an electrical cable (10) containing a conductor core (2) and for installing said electrical cable system over a longitudinally expandable-contractible element (1′, 6) characterized in that it comprises the successive steps of:

Abstract: A fiber optic cable includes layers and elements for mechanical and fire protection of the cable, all having the same or substantially the same thermal coefficient of expansion as the optical fibers. The fiber optic cable core is protected against flames by at least two layers of mica separated by a layer of synthetic material.