Electric distribution board

An electrical distribution device, comprising a surface mounting raceway having a back member adapted to be mounted on a wall and a front cover, said raceway being intended to accomodate electrical conductors, longitudinally arranged within the said raceway and each having a core and an insulating sheath, said conductors including two phase conductors and an earthing conductor, a plurality of conductor positioning and retaining units, lodged within the said raceway at predetermined positions along the length of said raceway and a plurality of current feed plugs having conductive pins adapted to pass through the conductor sheaths and to enter into contact with the conductor cores, said plugs being of a first type having a first arrangement of the said conductive pins which is adapted for feeding an electrical apparatus having an earth connection and of a second type having a second arrangement of the said conductive pins, which is adapted for feeding an electrical apparatus without any earth connection, said back member having a U-shaped cross-section with a flat back surface portion and first and second wing portions respectively having a free longitudinal edge and a connecting longitudinal end portion, a permanent hinge being formed at the said connecting longitudinal end portion for pivotally connecting the said cover to the said second wing portion of the back member, locking means at the said free edge for locking the cover in closed position, a first plurality of openings being formed in the said back surface and a second plurality of openings being formed in the said cover, the second plurality comprising a first group of openings arranged for receiving the conductive pins having the first arrangement and a second group of openings arranged for receiving the conductive pins having the second arrangement, the openings of the said first and second pluralities respectively having predetermined relative positions obtained by simultaneous punching of the said back surface and of the said cover to provide cut out portions and the openings of the second plurality being closed by said cut out portions of the cover which have been put back into the respective openings, each of said conductor positioning and retaining units comprising a support member having a flat back surface and a front surface, said flat back surface engaging the said flat back surface portion of the raceway and having centering projections which engage into the openings of the said first plurality, first and second pluralities of selector means being mounted on the said first face of each of the said conductor positioning and retaining units, said selector means being located along first, second and third generally parallel lines along which the two phase conductors and the earthing conductor are respectively positioned, the said selector means respectively facing openings of the said second plurality of openings when said cover is in closed position, the selector means of the first plurality each having projecting parts which pass through respective openings of the second plurality when the cover is in closed position and push out from the said respective opening the corresponding cut out portion, while the selector means of the second plurality each have a flat surface portion which cooperates with the cut out portion of the said respective opening of the second plurality for preventing the said cut out portion from being pushed out of the said respective opening when the cover is in closed position, the said conductor positioning and retaining units being of a first and a second types, the selector means of the first plurality of the conductor positioning and retaining units of the first type being positioned facing openings of the said first group and the selector means of the second plurality of the conductor positioning and retaining units of the first type being positioned facing openings of the said second group, while the selector means of the first plurality of the conductor positioning and retaining units of the second type are positioned facing the openings of the said second group and the selector means of the second plurality of the conductor positioning and retaining units of the second type are positioned facing the openings of the said first group.