NOVELTY - The device (3) has electrical conductors (10) whose cross sections have an aspect ratio greater than 200. The electrical conductors are joined in a flexible sheet and are connected with each other by a bypass diode (7) e.g. surface mount type or chip type by-pass diode, and a valve bridge (18). A support (16) receives an electrically conductive element i.e. strip (25), for connecting one of the electrical conductors of the device with an electrical conductor of another connection device.    USE - Electrical connection device for electrically connecting two photovoltaic panels of a covering assembly in a roof of a building (all claimed) i.e. industrial building. Can also be used for electrically connecting the photovoltaic panels of a covering assembly in a wall of the building.    ADVANTAGE - The configuration of the connection device facilitates the installation of the photovoltaic panels on the roof of the building, and ensures reliable sealing of the roof, while maintaining high flexibility of arrangement of the photovoltaic panels. The configuration of the connection device enables limiting retention of water, leaves, twigs and dust particles on the roof of the building. The structure of the connection device enables obtaining large electrical current passage sections, while conserving thin thickness of the connection device. The configuration of the connection device enables securing the fixation of the photovoltaic panels on the roof in extreme conditions, thus avoiding the sliding risk of the photovoltaic panels on the roof and the falling risk of the photovoltaic panels on a floor of the building.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a covering assembly comprising two photovoltaic panels    (2) a method for fabricating a covering assembly.    DESCRIPTION OF DRAWING(S) - The drawing shows a top perspective view of photovoltaic panels connected with each other by an electrical connection system.    Electrical connection device (3)    Bypass diode (7)    Electrical conductors (10)    Opening (15)    Support (16)    Valve bridge (18)    Strip (25)