APPLIANCE WIRING MATERIAL
Subj.758 Section 2 Page 2551 Issued:1971-12-07
Revised:2012-03-12
Style 2551 Multiple-Conductor Cable Using Extruded Non-Integral Jacket

Rating105 deg C, 30 Vac, Cable flame.
Conductor40 AWG min. solid or stranded round, tinned or bare.
InsulationLabeled or complying with manufacturer's AWM procedure.
AssemblyTwo or more insulated singles or groups of individually Assembly insulated singles cabled together. All insulated singles in any group shall be twisted together. If more than one group is used, groups shall also be twisted. The length of lay of the twisted cables or groups is not specified. Fillers may be used. A barrier layer may be applied over the assembly of the conductors or groups of conductors.
JacketExtruded PVC
Diameter of core assembly under jacket (inches) ¿Minimum average thickness (mils)Minimum thickness at any point (mils)
0.425 or less3024
0.426-0.7004536
0.701-1.0006048
1.001-1.5008062
1.501-2.50011088
2.501 and larger140112
StandardAppliance Wiring Material UL 758.
MarkingGeneral.
UseExternal Interconnecting Cable for Electronic Data- Processing Class - 2 Circuits Where Terminated in connectors.

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