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Trirated Cable is a high temperature, flame retardant electrical cable designed for use in panel building. Trirated Cable is often referred to more generally as Panel Wire, T.R.S (tri-rated singles) or BS 6231 Cable.〔(Panel Wire - Trirated Cable, 2491B/6701B Cable )〕 Trirated Cable is so called because it meets the requirements of three different international standards: BS 6231,〔(BSI Group )〕 UL (or Underwriters Laboratories),〔(Underwriters Laboratories )〕 and CSA (Canadian Standards Association).〔(Canadian Standards Association )〕 Combining three international standards in one product, makes Trirated Cable suitable for use in equipment required to meet both North American and European wiring regulations. This single core cable is described as ‘high temperature cable’ because of the high temperatures to which it is subjected during the manufacturing process. According to the UL standard, the maximum operating temperature of Trirated Cable is 105 °C. This refers, however, to operating temperature for a specific length of time. The British Standard BS 6231 states that the cable should have a maximum operating temperature of 90 °C for continuous use.〔(Why is Trirated Cable called ‘high temperature cable’? )〕 Voltage rating is another area over which the different standards vary. UL〔(UL 62 Standard specifications )〕 and CSA〔(C22.2 Standard specifications )〕 give Trirated Cable a voltage rating of 600 V, whilst it is rated at 1000 V in the BS 6231 standard.〔(BS 6231 Standard specifications )〕 ==Construction== The typical construction of Trirated Cable is broken down as follows: * Conductor: consists of plain copper, with a class 5 flexibility (cables are classified to indicate the degree of flexibility. Class 5 refers to flexible copper conductors as stipulated by British Standard BS EN 60228:2005) * Insulation: Heat Resistant Polyvinyl Chloride (HR PVC) insulation holds the conductor in place and provides protection from external stresses. Trirated cable is manufactured in a wide variety of insulation colours, including brown, orange, yellow, pink, and dark blue.〔(Tri-rated Cable BS 6231 Type CK, UL Subj.758, CSA )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Trirated cable」の詳細全文を読む スポンサード リンク
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