APPLIANCE WIRING MATERIAL
Subj.758 Section 4 Page 4278 Issued:1977-08-22
Revised:2019-11-07
Style 4278 Multiconductor cable with extruded non-integral jacket.

Rating105 deg C, 300 Vac, Cable flame.
Conductor30 AWG - 16 AWG solid or stranded.
InsulationLabeled or complying with manufacturer's AWM procedure, 9 mils minimum average.
AssemblyTwo or more individually insulated conductors or groups of insulated conductors cabled together. All conductors in any group twisted together. If more than one group is used, groups shall also be twisted together. The length of lay of the twisted conductors or groups is not specified. A barrier layer, if employed, may be a fibrous wrap serving, or braid; paper; nylon; oriented polyethylene terephthalate; or a thermoplastic-tape wrap. Such barrier layer would serve to protect the cable during further processing, and would be applied immediately over the twisted assembly of individual conductors or groups of conductors.
ShieldOptional. 36 - 30 AWG tinned or untinned copper applied as a wrap or braid or a wrap of aluminum faced polyester tape. An uninsulated drain wire may be used. The shield may be over one or more of the insulated conductors or applied between the conductor assembly and the optional covering.
CoveringOptional. A nominal 15 mils PVC covering may be extruded over the conductor assembly.
BraidOptional.
JacketXLPVC - see Facing Page for Compound Identification
dia of cable under jacket
0.700 inches or less30 mils min average24 mils min at any point
0.701-1.1000 dia45 avg36 min
1.001-1.500 dia60 avg48 min
StandardAppliance Wiring Material UL 758.
MarkingGeneral.
UseExternal interconnection of electronic equipment.

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