The composition and sequence of wire and cable model designations are as follows:
[1: Category/Application] [2: Conductor] [3: Insulation] [4: Inner Sheath] [5: Structural Features] [6: Outer Sheath or Derivative] - [7: Usage Characteristics]
Items 1 through 5, as well as Item 7, are represented by Pinyin letters. Polymer materials are represented by the initial letter of their English names; each item may consist of one or two letters. Item 6 consists of one to three digits.
Principles for Omission in Model Designations: Since copper is the primary conductor material used in wire and cable products, the code for a copper core ("T") is typically omitted, with the exception of bare wires and bare conductor products. Products falling under the categories of bare wires/conductors, power cables, and magnet wires do not display a general category code; similarly, wires and cables for electrical equipment and communication cables do not list a general category code, though they do specify sub-category or series codes.
Item 7 serves as a marker for various special application environments or additional specific usage requirements, indicated by Pinyin letters placed after a hyphen ("-"). Occasionally, to emphasize this specific feature, this item is placed at the very beginning of the designation. Examples include ZR- (Flame Retardant), NH- (Fire Resistant), WDZ- (Low Smoke, Halogen-Free; based on corporate standards), -TH (For Hot and Humid Regions), FY- (Termite-Resistant; based on corporate standards), etc.
Numerical Designation | Armoring Layer | Outer Covering or Outer Sheath