The item is used in connecting a light fitting or other device to the network supplying it. The T-connector is chosen according to the phase (L1, L2 or L3) the device is connected to. It has a 0,4 m, 1,0 m or 2,5 m long halogen free cable. The free end of the cable which will be wired to the connection coupler in the device is stranded. The T-connector is fed with a NAC52S.W -coupler (or with an prefabricated cableset). The installation continues from the T-connector to the next device with a NAC51S.W (or with an prefabricated cableset).