还没听说过！有的话我也想学习学习一下！

是这个吗？

UNDERWRITERS LABORATORIES INC. APPLIANCE WIRING MATERIAL
Subject 758 Section 2 Page 2624 Issued: April 2, 1973
Revised: Jan. 19, 2001
Style 2624 SPT Style Parallel Lead Wire
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Rating 60°C, 300 V.
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*Conductors Two, three, or four Nos. 26-16 AWG, tinned or bare.
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*Integral Similar to SPT except using Class 43 insulation,
Insulation 1/32 in thick, and shall maintain a minimum 0.027
and Jacket in of thickness after ripping at the web.
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*Standard Appliance Wiring Material UL 758.
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Instructions Detailed Examination.
to UL Tensile Strength and Elongation of insulation,
*Representative same as for Class 43.
* Spark Test.
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UL (4) Detailed Examination
Counter-Check (4) Tensile Strength and Elongation of
Program insulation, same as for Class 43.
*
* (4) Heat Shock.
* (4) Deformation.
* (4) Cold Bend.
* (4) Horizontal Flame Test.
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*Marking General.
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Use Internal Wiring of Electronic Equipment and
Interconnecting Loudspeakers.