UL1007 Specification

APPLIANCE WIRING MATERIAL

Subj.758 Section 1     Page 1007      Issued:1959-05-01
                                      Revised:2013-02-22
Style 1007      Single Conductor with Extruded Insulation

Rating	80 deg C, 300 Vac, Horizontal flame. Optional - 60 deg C or 80 deg C Oil.
Conductor	32 AWG - 16 AWG, Solid or Stranded.
Insulation	Extruded PVC, 15 mils minimum average thickness, 13 mils minimum thickness at any point.
Standard	Appliance Wiring Material UL 758.
Marking	General.
Use	Internal wiring of appliances. Tags may indicate the following: 600 V Peak - For Electronic Use Only.

UL20251 Specification

UNDERWRITERS LABORATORIES INC.          APPLIANCE WIRING MATERIAL

Subj. 758         Section 2  Page 20251       Issued:  1983-02-23

                                             Revised:  2005-08-12

Style 20251       Multi-Conductor Cord.

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Rating            60°C, 150 Volts, 300 Volts peak.

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Conductor         Two to ten 18-33 AWG, tinned or bare, solid, stranded,

                  or tinsel.  May include mixed AWG sizes.

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Insulation        Polypropylene, 7 mils minimum average, 5 mils minimum

                  at any point.

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Shielding         (Optional) One or more may be shielded.

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Jacket            PVC, Class 43, 20 mils minimum average, 16 mils minimum

                  at any point.

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Assembly          Cable may be either straight or wound in retractile

                  form.  Core may be either flat or round.  Barrier

                  layer and/or fillers optional.

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Standard          Appliance Wiring Material UL 758.

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Instructions      Detailed Examination.

to UL             Physical Properties, Unaged Insulation and Jacket.

Representative    Spark Test.

                 

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UL                (4)  Detailed Examination.

Counter-Check     (4)  Physical Properties of Insulation and Jacket, 

Program                Unaged and Aged.

                  (4)  Heat Shock.

                  (4)  Cold Bend.

                  (4)  Deformation.

*                 (12) Horizontal Flame Test on Cable.

                  (

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Marking           General.

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Use               Internal cable of electronic equipment, or as

                  "Handset Wire or Telephone Cord for Subscriber Sets".

UL2725 Specification

UNDERWRITERS LABORATORIES INC.          APPLIANCE WIRING MATERIAL

Subj. 758         Section 2  Page 2725        Issued:  1975-05-02

                                             Revised:  2006-11-20

Style 2725        Electronic Cable.

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Rating            60°C or 80°C, 30 V.

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Insulated         Labeled or Complies with manufacturer's AWM Procedure.

Singles           May include mixed sizes.

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Conductor         Two, three, or four parallel, or two or more

Assembly          twisted insulated singles or groups of twisted singles

                  twisted together or groups of twisted singles may be laid

                  parallel to form flat or oval cable.  Lay not specified.

Barrier layer and/or fillers optional.  May employ a web extruded integrally with the jacket.  Manufacturer shall maintain a complete description of each assembly. Diameter of assembly under jacket one inch maximum.

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Shield            Optional.

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Jacket            PVC, Class 43, 9 mils minimum average, 7 mils minimum at any point, before and after ripping if a web is used.

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Standard          Appliance Wiring Material UL 758.

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Instructions      Detailed Examination.

to UL             Tensile and elongation of jacket, unaged

Representative

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UL                (4)  Detailed Examination.

Counter-Check     (4)  Tensile and elongation of jacket, unaged and aged

(4)            Heat Shock

(4)            Cold Bend

(4)   Deformation

*Program          (12) Horizontal Flame Test.

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Marking           General.

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Use               Internal wiring of electronic equipment in Class 2 systems

                  only.

UL1569 Specification

UNDERWRITERS LABORATORIES INC.                       APPLIANCE WIRING MATERIAL

Subj. 758         Section 1   Page 1569       Issued:  1972-09-26

                                             Revised:  2003-09-17

Style 1569        PVC Insulated Wire.

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Rating            80°C, 90°C or 105°C, 300 Volts.

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Conductor        No. 30 through 2 AWG, stranded or solid. and                                Insulation                          Thermoplastic PVC                                  Minimum         Minimum                                  Average      Thickness at                                 Thickness       any point                  AWG Size         mils            mils                       30 - 10           15              13                    9 -  2           30              27

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Covering          Optional - PVC, minimum average thickness 9 mils,

                  minimum thickness at any point 8 mils.

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Standard          Appliance Wiring Material UL 758.

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Instructions      Detailed Examination.

to UL             Physical Properties, Unaged, Class 43.

Representative    Spark Test.

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UL                (4)  Detailed Examination.

*Counter-Check   (4)  Physical Properties.

Program           (4)  Heat Shock.

                  (4)  Cold Bend.

                  (4)  Deformation.

                  (12) Horizontal Flame Test.

_________________________________________________________________Marking           General.

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Use               Internal wiring of appliances or electronic equipment

                  where not subjected to movement or mechanical damage.      

                  Tag may also indicate the following, "600 Volts

                  Peak for Electronic Use Only."

Multipair Cable

Multipair Cable

A multi-pair shielded cable is a cable made up of a plurality of pairs of insulated wires disposed inside a sleeve of insulating material. Multi-pair shielded cable is used extensively in the communications and computer industries. Cables for high-speed data communications typically consist of multiple twisted pairs. 

A twisted pair exchange cable comprises groups of individual conductor wires that are twisted together into pairs. A wide variety of cable arrangements having twisted conductor pairs are utilized in the  telecommunication industry. The increased need for high-speed communication transmissions has placed a greater demand on twisted conductor pair systems.

When twisted pairs are closely placed in a cable, electrical energy may be transferred from one twisted pair of a cable to another twisted pair.  Such energy transferred between twisted pairs is referred to as crosstalk. As operating frequencies increase, improved crosstalk isolation between the twisted pairs becomes more critical.

The TIA/EIA-568A or TIA/EIA 568B specification sets out  transmission requirements, such as, for example, maximum acceptable crosstalk, skew and impedance mismatch values between twisted pairs, for cables that are  classified as Category 5 (Cat. 5) and category 6 (Cat. 6) cables. In order to meet these requirements various techniques are employed to control crosstalk between twisted pairs and skew. 

Multi-pair cables are used to transfer communication signals between, for example, components of a local area network (LAN) such as computers, telephones, and other devices. With multi-pair cables, the signals generated at one end of the cable should ideally arrive at the same time at the opposite end even if they travel along different twisted pair wires.

More aboout hook up wire, please go to - Pan-International Wire and Cable

contact : ctloo@pan-intl.com

UL 1015 Specification

UNDERWRITERS LABORATORIES INC.                  APPLIANCE WIRING MATERIAL

Subj. 758         Section 1         Page 1015 Issued:  1959-05-01

                                             Revised:  2003-02-17

Style 1015        PVC Insulated Wire.

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Rating            80°C, 90°C or 105°C; 600 V ac, 750 V dc.

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Conductor         30 AWG - 2000 kcmil.

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Insulation        PVC

                                     Min. Avg.     Min at Any Point

                     Size              Mils           Mils       

                     30-9                  30               27

                      8,7                  45               40

                      6-2                  60               54

                     1-4/0                 80               72

                     250-500 kcmil         95               86

                     550-1000 kcmil       110                99

                     1100-2000 kcmil      125               112

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Standard          Appliance Wiring Material UL 758.

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Instructions      Detailed Examination.

to UL             Physical Properties, unaged, Class 43.

Representative    Spark Test.

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UL                (4)  Detailed Examination.

Counter-Check     (4)  Physical Properties, Class 43.

Program           (4)  Heat Shock.

                  (4)  Cold Bend.

                  (4)  Deformation.

*                 (12) Horizontal Flame Test.

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Marking           General.

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Use               Internal Wiring of Appliances; or Internal Wiring of

Appliances where exposed to oil at a temperature not exceeding 60 deg. C or 80 deg. C (whichever is applicable).  Tags may also indicate the following: 2,500 V peak - for electronic use only.

Speaker Wire

Speaker Wire


Speaker wire is used to make the electrical connection between loudspeakers and audio amplifiers.

Modern speaker wireconsists of two electrical conductors individually insulated by plastic. Certain older designs also featured another pair of wires for a powered line to power an electromagnet in the loudspeaker before permanent magnets became economical to produce and use.The effect of speaker wire upon the signal it carries has been a much-debated topic in the audiophile and high fidelity worlds. 

Speaker wire, like any other linear electrical component, has three parameters which determine its performance: resistance, capacitance, and inductance. If a perfect wire were possible, it would have no resistance, no capacitance, and no inductance. The shorter a wire is, the closer it comes to being perfect, as resistance decreases as length decreases in all conductors (except superconductors). 

Resistance is the property which has the most effect on speaker wire performance, whereas capacitative and inductive characteristics of speaker wire are insignificantly small relative to the loudspeaker itself. Larger conductors (smaller wire gauge) have smaller resistance. As long as speaker wire resistance is kept to less than 5% of the speaker's impedance, the conductor will be adequate for home use.

Stranded speaker wire is more flexible than solid wire, and is suitable for movable equipment. Even with poor-quality wire, an audible degradation of sound may not exist. Many supposedly audible differences in speaker wire can be attributed to listener bias or the placebo effect.


Contact : ctloo@pan-intl.com