APPLIANCE WIRING MATERIAL
Subj.758 Section 2 Page 20578 Issued:1988-05-05
Revised:2012-10-17
Style 20578 Multiconductor Cable with Extruded Non-Integral Jacket

Rating60 deg C, 30 Vac, Cable flame (construction B), Horizontal flame (construction A).
Conductor40 AWG minimum solid or stranded round, tinned or bare copper.
InsulationLabeled or complying with manufacturer's AWM procedure.
AssemblyConsists of two or more conductors, twisted pairs or groups of twisted conductors twisted together. The conductors or groups of conductors may be laid parallel forming a flat, oval or round cable. The lay of the conductors is not specified. A barrier layer and/or fillers are optional. Manufacturer shall maintain a complete description of each assembly. May use same or mixed AWG size.
ShieldOptional.
CoveringOptional - Extruded PVC, 3 mils minimum at any point may be extruded over shielded or unshielded twisted singles, individual groups of twisted singles, or the complete insulated conductor assembly.
JacketExtruded PVC
dia of cable under jacket is 0.350 inches or less*(const A)15 mils min avg12 mils min at any point
dia of cable under jacket is 0.350 inches or less(const B)30 avg24 min
0.351-0.700 dia(const A) and (const B)30 mils avg24 mils min
0.701-1.000 dia(const A) and (const B)40 avg36 min
1.001-1.500 dia(const A) and (const B)54 avg48 min
*Major dia if cable is flat or oval.
StandardAppliance Wiring Material UL 758.
MarkingGeneral.
UseConstruction A: Internal Wiring in Electronic Equipment. Construction B: External Wiring in Electronic Equipment.

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