Telecommunications, termination, distribution and management systems for optic fibre including telecommunications equipments; optical fibre telecommunications apparatus; terminations for sealing electric cables; distribution boxes and boards; cable management installations for data signal and power transmission; electric cable ducts; electrical distribution frames; optical frames; optical fibre cables; optical fibre splicing apparatus; splice boxes for optical cables and optical fibres; patch panels; cable trays for electric cables; electrical enclosures made from sheet steel; enclosures for circuit breakers; electricity boxes for electrical installations; electric cable and connector boxes; port racks being terminals for use in electrical cable installation; consumable electrodes for use in welding