APPLIANCE WIRING MATERIAL
Subj.758 Section 4 Page 4221 Issued:1970-04-22
Revised:2019-10-11
Style 4221 Multiple-conductor cable using non-integral jacket.

Rating60 deg C, 300 Vac, Horizontal flame.
Conductor18 AWG stranded.
InsulationExtruded CP or Extruded CPE or Extruded EP or Extruded NBR/PVC or Extruded NEOPRENE or Extruded SRB/NR or Extruded XL, 15 mils minimum average thickness, 13 mils minimum thickness at any point.
AssemblySame as for Type SVO, SJO, OR SO. Note; 0.045 in min when coiled in form of a helix.
Shield0.001 in polyester tape over assembly with 23 AWG stranded tinned copper drain (grounding) wire, with polyester-aluminum foil tape over polyester tape and drain wire.
JacketExtruded CP or Extruded EPDM or Extruded NBR/PVC or Extruded NEOPRENE or Extruded SRB/NR, 30 mils min average thickness, 24 mils minimum thickness at any point. 0.045 in min when coiled in form of a helix.
StandardAppliance Wiring Material UL 758.
MarkingGeneral.
UseInternal wiring.

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