APPLIANCE WIRING MATERIAL
Subj.758 Section 4 Page 4166 Issued:1959-08-06
Revised:2011-11-18
Style 4166 Multiconductor cable with extruded non-integral jacket.

Rating60 deg C, 300 Vac.
ConductorEach is composed of six tinsel threads stranded with rope lay around a No. 10 three-ply cotton thread at nominally 2.5 turns per inch. Each tinsel consists of two No. 37 AWG copper alloy wires flattened to nominal 0.0009 by 0.018 inch and spiraled concentrically around a core of No. 20, three-ply cotton threads. The conductor resistance per linear foot of cord length shall be 0.28 ohms maximum.
InsulationExtruded SRB/NR, 15 mils minimum average thickness, 13 mils minimum thickness at any point.
AssemblyFour conductors, same as type SV Cord, but with a lay of twist opposite in direction to the direction in which the helical cord is wound.
JacketExtruded NR - NEOPRENE, 30 mils minimum average thickness. The cord is vulcanized while coiled in a helical shape on a mandrel. When the helix is stretched out and released, the cord returns to its helical form because of the elasticity of the jacket.
StandardAppliance Wiring Material UL 758.
MarkingGeneral.
UseSuitable for hand set cord of telephone for use in Hazardous Locations.

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