-usually used in control panel;
-high temperature, which maximum operating temperature is 105 °C in specific period;
-also commonly called BS 6231 Cable.
-meets the requirements of three different international standards: BS 6231,UL (or Underwriters Laboratories),nd CSA (Canadian Standards Association);
-has a voltage rating of 600V as per UL and CSA, whilst rated at 1000 V in the BS 6231 standard.
Common Brands in Hong Kong
Local / PRC
Inroduction of 3 Standards
BS 6231 is a British Standard last updated in 2006 by the BSI Group (a leading global provider of standards, management systems, business improvement and regulatory approval information).
This standard specifies the performance and construction requirements of electrical cables that are single core, non-sheathed, PVC-insulated and of rated voltage 600/1000 V.
Although many use the name BS 6231 when referring generally to tri-rated cable, this is an erroneous statement, not only because tri-rated cable is approved to two standards other than this one, but also because other electrical cables meet the requirements of this British Standard.
The Canadian Standards Association (CSA) is a non-profit membership-based association, which develops standards to protect public health and safety and to help preserve the environment in Canada and the global marketplace.
Trirated cable is approved to CSA standard C22.2 Number 49, which specifies the requirements for flexible cords, elevator cables, and hoistway cables, rated to a maximum of 600 V.
Underwriters Laboratories (UL) is an independent product safety certification organisation, which has been in operation since 1894. UL is the most famous Nationally Recognised Testing Laboratory (NRTL) in the United States and conducts certification testing of every electrical appliance.
They use 70 different product categories and more than 30 Standards for Safety to evaluate wiring and cable products. UL62, the Standard for flexible cord, is the standard to which trirated cable is approved.
It covers flexible cord constructed and listed for use in accordance with Article 400 of ANSI/NFPA 70, The American "National Electrical Code" (NEC). UL has a policy of cross-certification so that a product can be certified by UL using CSA standards, such products are certified C-UL.