Cable set for connecting test devices such as METRATESTER 4/5/5-F, SECUTEST 0701 / 0702S II or SECUTEST SII (with feature F01) to the mains without an earthed socket and for connecting test objects, consisting of a coupling socket with 3 permanently connected cables, 3 Test leads, 3 attachable alligator clips, 2 attachable test probes.