This accessory is intended for wire cable trays comprising longitudinal
warp wires and transverse weft wires linking the warp wires, the wire
cable tray having a bottom adapted to receive electric cables or the like
and two side flanges.The accessory comprises an upper face (4) raised by
at least two feet (2).The upper face (4) comprises not only two first
housings (10) disposed parallel to each other and each adapted to receive
a weft wire but also at least one housing (12) substantially
perpendicular to the first two housings (10).At least one locking device
(16) is provided on each side of a median line between the first two
housings (10).