Regarding cable standards

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The electrician kept saying that he couldn’t find cables that meet national standards; after looking up the standards for cables online, I was completely confused. Standard number Standard name GB/T2951.11-2008 General test methods for insulation and sheath materials of electric and optical cables Part 11: General test methods for thickness and overall dimension measurement, mechanical property tests GB/T2951.12-2008 General test methods for electrical and optical cable insulation and sheath materials Part 12: General test methods Thermal aging test methods GB/T2951.13-2008 General test methods for electrical and optical cable insulation and sheath materials Part 13: General test methods Density determination method Water absorption test-shrinkage test GB/T2951.14-2008 General test methods for electrical and optical cable insulation and sheath materials Part 14: General test methods Low temperature test GB/T2951.21-2008 General test methods for insulation and sheath materials of electric and optical cables Part 21: Special test methods for elastomer mixtures Ozone resistance test-hot extension test-mineral oil immersion test GB/T2951.31-2008 General test methods for insulation and sheath materials of electric and optical cables Part 31: Special test methods for polyvinyl chloride mixtures High temperature pressure test-cracking resistance test GB/T2951.32-2008 General test methods for insulation and sheath materials of electric and optical cables Part 32: Special test methods for polyvinyl chloride mixtures Weight loss test Thermal stability test GB/T2951.41-2008 General test methods for electrical and optical cable insulation and sheath materials Part 41: Special test methods for polyethylene and polypropylene blends Environmental stress cracking resistance test Melt index measurement method Direct combustion method to measure carbon black and/or mineral filler content in polyethylene Thermogravimetric analysis (TGA) method to measure carbon black content Microscopic method to evaluate carbon black dispersion in polyethylene GB/T2951.42-2008 General test methods for electrical and optical cable insulation and sheath materials Part 42: Special test methods for polyethylene and polypropylene blends Test for tensile strength and elongation at break after high temperature treatment Winding test after high temperature treatment Winding test after air thermal aging Determination of mass increase Long-term thermal stability test Test method for catalytic oxidative degradation of copper GB/T2951.51-2008 General test methods for insulation and sheathing materials of electric and optical cables Part 51: Special test method for filling paste Dropping point oil separation Low temperature brittleness Total acid value Corrosiveness GB/T6995.1-2008 Wire and cable identification marking method Part 1: General provisions GB/T6995.2-2008 Wire and cable identification marking methods Part 2: Standard Color Standard Number Standard Name GB/T6995.3-2008 Wire and Cable Identification Marking Method Part 3: Wire and cable identification marking GB/T6995.4-2008 Wire and cable identification marking method Part 4: Electrical Equipment Wires and Cables Insulated Core Identification Marks GB/T6995.5-2008 Wire and Cable Identification Marking Methods Part 5: Identification mark for insulated cores of power cables GB/T7095.1-2008 Enameled copper flat winding wires Part 1: General provisions GB/T7095.2-2008 Enameled copper flat winding wire Part 2: Class 120 Acetal Enameled Copper Flat Wire GB/T7095.3-2008 Enameled Copper Flat Winding Wire Part 3: Class 155 polyester enameled copper flat wire GB/T7095.4-2008 enameled copper flat winding wire part 4: Grade 180 polyesterimide enameled copper flat wire GB/T7095.5-2008 enameled copper flat winding wire part 5: Class 240 aromatic polyimide enameled copper flat wire GB/T7095.6-2008 enameled copper flat winding wire Part 6: Class 200 polyester or polyesterimide/polyamideimide composite enameled copper flat wire GB/T7095.7-2008 enameled copper flat winding wire Part 7: Class 130 polyester enameled copper flat wire GB/T18014-2008 * PVC insulated wires for pipe detonation GB/T18380.11-2008 Electrical and optical cables combustion tests under flame conditions Part 11: Single insulated wire and cable flame vertical spread test test device GB/T18380.12-2008 Burning test of electric and optical cables under flame conditions Part 12: Single insulated wire and cable flame vertical spread test 1kW premixed flame test method GB/T18380.13-2008 Electrical and optical cables combustion test under flame conditions Part 13: Test method for vertical flame spread test of single insulated wire and cable to determine burning dripping/particles GB/T18380.21-2008 Burning test of electrical and optical cables under flame conditions Part 21: Single insulated thin wire and cable flame vertical spread test test device GB/T18380.22-2008 Electrical and optical cables burning test under flame conditions Part 22: Vertical flame spread test of single insulated thin wire and cable Diffusion flame test method GB/T18380.31-2008 Burning test of electric and optical cables under flame conditions Part 31: Vertical flame spread test test device for vertically installed bundled wires and cables Standard number Standard name GB/T18380.32-2008 Combustion test of electric and optical cables under flame conditions Part 32: Vertical flame spread test for vertically installed bundled wires and cables AF/R class GB/T18380.33-2008 Burning test of electric and optical cables under flame conditions Part 33: Vertical flame spread test for vertically installed bundled wires and cables Class A GB/T18380.34-2008 Burning test of electric and optical cables under flame conditions Part 34: Vertical flame spread test for vertically installed bundled wires and cables Class B GB/T18380.35-2008 Burning test of electric and optical cables under flame conditions Part 35: Vertical flame spread test for vertically installed bundled wires and cables Class C GB/T18380.36-2008 Burning test of electric and optical cables under flame conditions Part 36: Vertical flame spread test for vertically installed bundled wires and cables Class D GB/T1179-2008 Round wire concentrically twisted overhead conductors GB/T5023.1-2008 Polyvinyl chloride insulated cables with rated voltage 450/750V and below Part 1: General requirements GB/T5023.2-2008 PVC insulated cables with rated voltage 450/750V and below Part 2: Test method GB/T5023.3-2008 Polyvinyl chloride insulated cables with rated voltage 450/750V and below Part 3: Unsheathed cables for fixed wiring GB/T5023.4-2008 Polyvinyl chloride insulated cables with rated voltage 450/750V and below Part 4: Sheathed cables for fixed wiring GB/T5023.5-2008 Polyvinyl chloride insulated cables with rated voltage 450/750V and below Part 5: Flexible cables (flexible wires) GB/T5023.7-2008 Polyvinyl chloride insulated cables with rated voltage 450/750V and below Part 7: Two-core or multi-core shielded and unshielded flexible cables GB/T7672.1-2008 Glass filament covered winding wires Part 1: General provisions for glass fiber copper-clad flat winding wires GB/T7672.2-2008 Glass fiber-coated flat winding wires Part 2: Class 130 impregnated glass fiber coated copper flat wire and glass fiber coated enameled copper flat wire GB/T7672.21-2008 Glass fiber coated winding wire Part 21: General provisions for glass fiber-coated copper round winding wires Standard number Standard name GB/T7672.22-2008 Glass fiber-coated copper round winding wires Part 22: Class 155 impregnated glass fiber coated copper round wire and glass fiber coated enameled copper round wire GB/T7672.23-2008 Glass fiber coated winding wire Part 23: Class 180 impregnated glass fiber coated copper round wire and glass fiber coated enameled copper round wire GB/T7672.24-2008 Glass fiber coated winding wire Part 24: Class 200 impregnated glass fiber coated copper round wire and glass fiber coated enameled copper round wire GB/T7672.3-2008 Glass fiber coated winding wire Part 3: Class 155 impregnated glass fiber coated copper flat wire and glass fiber coated enameled copper flat wire GB/T7672.4-2008 Glass fiber coated winding wire Part 4: Class 180 impregnated glass fiber coated copper flat wire and glass fiber coated enameled copper flat wire GB/T7672.5-2008 Glass fiber coated winding wire Part 5: Class 200 impregnated glass fiber coated copper flat wire and glass fiber coated enameled copper flat wire GB/T7672.6-2008 Glass fiber coated winding wire Part 6: Glass fiber wrapped film wrapped copper flat wire GB/T9326.1-2008 AC 500kV and below paper or polypropylene composite paper insulated metal sheathed oil-filled cables and accessories Part 1: Test GB/T9326.2-2008 AC 500kV and below Paper or polypropylene composite paper insulated metal sheathed oil-filled cables and accessories Part 2: AC 500kV and below paper insulated lead sheathed oil-filled cables GB/T9326.3-2008 AC 500kV and below paper or polypropylene composite paper insulated metal sheathed oil-filled cables and accessories Part 3: Terminal GB/T9326.4-2008 Paper or polypropylene composite paper insulated metal sheathed oil-filled cables and accessories for AC 500kV and below Part 4: Connectors GB/T9326.5-2008 Paper or polypropylene composite paper insulated metal sheathed oil-filled cables and accessories for AC 500kV and below Part 5: Pressure oil supply tank GB/T9330.1-2008 Plastic insulated control cable Part 1: General provisions GB/T9330.2-2008 Plastic insulated control cables Part 2: Polyvinyl chloride insulated and sheathed control cables Standard number Standard name GB/T9331-2008 Ship electrical installations rated voltage 1kV and 3kV Extruded insulated non-radial electric field single-core and multi-core power cables GB/T11018.1-2008 Wire-clad copper winding wire Part 1: Wire-covered single wire GB/T11018.2-2008 Wire-covered copper winding wire Part 2: Class 130 wire-wrapped direct welding polyurethane enameled bundle wire GB/T12527-2008 Overhead insulated cables with rated voltage 1kV and below GB/T12528-2008 Cables for rail transit vehicles with AC rated voltage 3kV and below GB/T12666.1-2008 Single wire and cable combustion test method Part 1: Vertical combustion test GB/T12666.2-2008 Single wire and cable combustion test method Part 2: Horizontal combustion test GB/T12666.3-2008 Single wire and cable combustion test method Part 3: Inclined combustion test GB/T12971.1-2008 Contact wire for electric traction Part 1: Copper and copper alloy contact wire GB/T12971.2-2008 Contact wire for electric traction Part 2: Steel and aluminum composite contact wire GB/T12972.10-2008 Mining rubber sheathed flexible cables Part 10: Miner's hat lamp wire GB/T12972.1-2008 Mining rubber sheathed flexible cable Part 1: General provisions GB/T12972.2-2008 Mining rubber sheathed flexible cables Part 2: Coal shearer flexible cables with rated voltage 1.9/3.3kV and below GB/T12972.3-2008 Mining rubber sheathed flexible cables Part 3: Rated voltage 0.66/1.14kV coal shearer shielding monitoring reinforced flexible cable GB/T12972.4-2008 Mining rubber sheathed flexible cable Part 4: Standard number and standard name of metal shielded flexible cables for coal shearers with rated voltage 1.9/3.3kV and below GB/T12972.5-2008 Mining rubber sheathed flexible cables Part 5: Which mobile rubber-sheathed flexible cable is used for rated voltages of 0.66/1.14kV and below?