[en] Hysteretic and pulsed-field loss measurements have been performed on cables built up from a basic Nb-Ti composite conductor. Measurements were performed on the basic composite; on first-level cables, consisting of six soft copper wires twisted tightly around the basic composite; and on second-level cables, fabricated by twisting six first-level cables around either a bare or formvar-insulated center copper wire. Results of the measurements were analyzed in terms of a recent theory by Turck for losses in multifilamentary wires. We found from this analysis that contact resistances between constituent conductors in both first- and second-level cables play an important role in determining the pulsed-field loss values. We have been able to vary the degree of interstrand resistive coupling by compacting the cables and by solder-filling them. When the contact is good, as for solder-filled cables, the losses increase by about a factor of 7.5 for long pulse times relative to non-solder-filled, non-compacted cables. For relatively high contact resistances, as for unsoldered cables, the constituent conductors are more nearly decoupled from each other and the losses are low. From the study we have found that it is possible to produce, in a simple manner, fully-stabilized, high-current cables that exhibit low pulsed-field losses. Such conductors are attractive for application in Tokomak induction heating and energy storage magnets