Understanding 4 AWG Cable
あ 4 AWG cable is a standard conductor size defined by the American Wire Gauge (AWG) system. It is widely used in electrical systems due to its balance between conductivity, 機械的強度, and installation flexibility.
Key parameters of 4 AWG cable:
- 断面積: approximately 21.1 mm²
- 導体径: about 5.2 んん
- Typical ampacity: 85–95 A (depending on insulation and installation conditions)
This size is commonly applied in both low voltage and medium voltage systems with different structural designs.
Conductor Materials for 4 AWG Cable
銅導体
- High electrical conductivity
- 優れた柔軟性
- Better performance in demanding environments
アルミニウム導体
- 軽量
- 費用対効果の高い
- Suitable for large-scale installations
Low Voltage 4 AWG Cable Structure (0.6/1kV)
Low voltage 4 AWG cable is commonly used in residential, コマーシャル, and industrial applications.
導体
- Copper or aluminum
- Solid or stranded
絶縁
Typical materials:
- PVC
- XLPE
機能:
- 電気絶縁
- Heat resistance
フィラー (多芯ケーブル用)
- Maintains cable shape
- Improves mechanical stability
Inner Sheath (Bedding)
- Provides structural support
- Protects internal layers
装甲 (Optional)
Steel Tape Armor (STA)
- Suitable for light mechanical protection
スチールワイヤーアーマー (SWA)
- Suitable for heavy-duty underground use
アウターシース
- PVCまたはPE
- Protection against moisture, abrasion, and chemicals
Medium Voltage 4 AWG Cable Structure (5kV/11kV/15kV/20kV/33kV/35kV)
Medium voltage 4 AWG cable has a more complex design to control electrical stress and ensure safety.
導体
- Stranded copper or aluminum
- Compact construction
導体スクリーン (Semiconductive Layer)
- Ensures smooth electric field distribution
- Prevents partial discharge
絶縁
Materials:
- XLPE
- EPR
特徴:
- 高い絶縁耐力
- Thermal stability
断熱スクリーン
- Works with conductor screen
- Maintains uniform electric field
メタリックスクリーン
- Copper tape or wires
機能:
- Grounding
- Fault current path
水分遮断層 (Optional)
- Water-swellable tape
- Gel compounds
Used in:
- Underground or submarine environments
Inner Sheath
- Separates metallic screen from armor
装甲
スチールワイヤーアーマー (SWA)
- Provides high mechanical strength
アルミワイヤーアーマー (AWA)
- Used in specific environments
アウターシース
- PE, HDPE, or PVC
- Resistant to UV, moisture, and chemicals
Electrical Differences Between LV and MV 4 AWG Cable
定格電圧
- Low voltage: 0.6/1kV
- Medium voltage: 5kV–35kV
断熱システム
- LV: Basic insulation (PVC/XLPE)
- MV: Advanced insulation with semiconductive layers
シールド
- LV: Not required
- MV: Mandatory
Structural Complexity
- LV: Simple
- MV: Multi-layer engineered design
Applications of 4 AWG Cable
Low Voltage Applications
- Building wiring
- Power distribution panels
- Solar energy systems
- Equipment connections
Medium Voltage Applications
- Power distribution networks
- Substations
- 産業プラント
- Renewable energy systems
Selection Considerations for 4 AWG Cable
Electrical Requirements
- Load current
- 電圧レベル
Installation Conditions
- Indoor or outdoor
- Underground or aerial
機械的保護
- Need for armoring
- Environmental exposure
熱性能
- 動作温度
- Insulation type
DOS CABLE – Fabricante y proveedor
二線式 es un fabricante y proveedor profesional especializado en soluciones de cables de baja y media tensión, incluyendo una amplia gama de 4 AWG cable para diferentes aplicaciones industriales y de energía.
La empresa ofrece:
- Diseño personalizado según requisitos del proyecto
- Producción conforme a normas IEC, IEEE y estándares internacionales
- Opciones completas en cables LV y MV con diferentes estructuras
- Estricto control de calidad y alto rendimiento eléctrico
Con experiencia en proyectos internacionales, 二線式 suministra cables confiables, duraderos y adaptados a entornos exigentes como instalaciones industriales, subterráneas y submarinas.