... Copper Conductor 4. Unshielded Rigid Fire Alarm Cable, Security Cable Unshielded Rigid Fire Alarm Cable, Security Cable ApplicationsWiring Burglar Alarm, Public Address Systems, Intercoms, Telephone ... : 1 amp per coreStandardsBS4737: Insulated cables, PVC insulated for intruder alarm systemsNEC 725/800: CM / CL2,SpecificationsModel No.ConductorInsulationOverallNom. AreaMax. Resistance ...