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[问题求助] UL 2646 26AWG 芯线集合要求的绞距是多少？
wolfman: P:2009-11-10 17:54:30
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UNDERWRITERS LABORATORIES INC. APPLIANCE WIRING MATERIAL
Subj. 758 Section 2 Page 2464 Issued: 1968-05-02
Revised: 2003-05-02
Style 2464 PVC Jacketed Cable.
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Rating 80°C, 300 V.
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Insulated Labeled or complying with manufacturer's AWM Procedure
Conductors having a minimum rating of 80°C and 300 V.
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Assembly Two or more singles, twisted pairs of groups of twisted
singles twisted together or singles or groups of singles
may be laid parallel to form flat, oval or round cable.
Lay not specified. Barrier layer and/or fillers optional.
Manufacturer shall maintain a complete description of each
assembly. May use same or mixed AWG size.
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*Covering (Optional.)
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Shield Optional.
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Jacket PVC - Class 43
THICKNESS OF PVC JACKET (mils)
#Dia. of Cable Minimum
Under Jacket Minimum at any
in Inches Average point
0.700 or less 30 24
0.701 - 1.000 45 36
1.001 - 1.500 60 48
1.501 - 2.500 80 64
2.501 - 4.000 110 88
4.001 or larger 140 112
# Major diameter if cable is flat or oval.
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Braid Optional.
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Standard Appliance Wiring Material UL 758.
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(Continued on Page 2464A)
UNDERWRITERS LABORATORIES INC. APPLIANCE WIRING MATERIAL
Subj. 758 Section 2 Page 2464A Issued: 1968-05-02
Revised: 2003-05-02
Instructions Detailed Examination of the cable assembly and jacket.
to UL Physical Properties of Jacket.
Representative Dielectric Strength Test, 1500 Volts (shielded cable only).
The designation of all Styles of the individual conductors used making up the cable assembly shall be available, and the UL Representative’s tag shall indicate if the Style is labeled or not. If they are not labeled, the appropriate Follow-Up Tests shall be conducted.
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UL (4) Detailed Examination.
Counter-Check (4) Physical Properties of Jacket.
Program (4) Heat Shock on Jacket.
(4) Cold Bend on Completed Cable.
(4) Deformation on Jacket, Class 43.
(12) Cable Flame Test on Completed Cable.
If the insulated styles are not labeled, the appropriate Follow-Up Tests shall be conducted.
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Marking General.
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Use Internal wiring or external interconnection of electronic
equipment (such as desk-type calculators, dictating
machines, or x-ray equipment).
B.G. - Birmingham gauge伯明翰线规 （0） 投诉
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