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The following are the commonly used wire color standards in lowvoltage distribution cabinets in major countries and regions (based on lowvoltage power distribution systems, threephase/singlephase circuits) for reference:
- 중국 (GB 7947/IEC 60446)
| 기능 | 색상 | 설명 |
| Threephase live wire (L1) | 노란색 (와이) | A단계 (활선) |
| Threephase live wire (L2) | 녹색 (G) | Phase B (활선) |
| Threephase live wire (L3) 三相火线（L3） | 빨간색 (아르 자형) | Phase C (활선) |
| 중성선 (N) | 파란색 (비) | 중성선 (중립적) |
| Ground wire (체육) | Yellowgreen twocolor (Y/G) | Protective ground wire (PE 와이어) |
| Singlephase live wire (엘) | 빨간색 (아르 자형) | Live wire in a singlephase circuit |
- 미국 (NEC standard, ANSI/NFPA 70)
| 기능 | 색상 | 설명 |
| Threephase live wire (L1) | 검은색 (Bk) | A단계 (활선) |
| Threephase live wire (L2) | 빨간색 (아르 자형) | Phase B (활선) |
| Threephase live wire (L3) | 파란색 (Bl) | Phase C (활선, 208Y/120V system) |
| 중성선 (N) | 하얀색 (여) | 중성선 (중립적), with stripes or markings |
| Ground wire (체육) | 녹색 (G) or yellowgreen twocolor | Protective ground wire (bare or insulated) |
| Singlephase live wire (엘) | 검은색 (Bk) or Red (아르 자형) | Live wire in a singlephase circuit (120V/240V system) |
III. European Union (IEC 60446, taking Germany and France as examples)
| 기능 | 색상 | 설명 |
| Threephase live wire (L1) | 갈색 (Br) | A단계 (활선) |
| Threephase live wire (L2) | 검은색 (Bk) | Phase B (활선) |
| Threephase live wire (L3) | 회색 (Gy) | Phase C (활선) |
| 중성선 (N) | 파란색 (비) | 중성선 (중립적) |
| Ground wire (체육) | Yellowgreen twocolor (Y/G) | Protective ground wire (PE 와이어) |
| Singlephase live wire (엘) | 갈색 (Br) | Live wire in a singlephase circuit |
- 영국 (Old standard vs New standard)
Old standard (Before 2004, BS 7671):
| 기능 | 색상 |
| Threephase live wire | 빨간색 (아르 자형), 노란색 (와이), 파란색 (Bl) |
| 중성선 (N) | 검은색 (Bk) |
| Ground wire (체육) | Yellowgreen twocolor (Y/G) |
New standard (After 2004, in line with IEC in the European Union):
The same as the EU standard (Live wires: 갈색, 검은색, 회색; 중성선: 파란색; Ground wire: Yellowgreen twocolor).
- 일본 (JIS C 3306)
| 기능 | 색상 | 설명 |
| Threephase live wire (L1) 三相火线（L1） | 빨간색 (아르 자형) | Live wire in a 100V system (A단계) |
| Threephase live wire (L2) | 검은색 (Bk) | Live wire in a 100V system (Phase B) |
| 중성선 (N) | 하얀색 (여) | 중성선 (중립적) |
| Ground wire (체육) | 녹색 (G) | Protective ground wire (PE 와이어) |
| Singlephase live wire (엘) | 빨간색 (아르 자형) or Black (Bk) | Live wire in a singlephase circuit (100V/200V system) |
- Other regions
Australia/New Zealand (AS/NZS 3000):
Live wires: 갈색 (L1), 파란색 (L2), 검은색 (L3); 중성선: Light blue; Ground wire: Yellowgreen twocolor.
캐나다 (CSA C22.1):
Similar to the US standard, threephase live wires are commonly black, 빨간색, 그리고 파란색, the neutral wire is white, and the ground wire is green.
러시아 제국 (GOST standard):
Live wires: 노란색 (L1), 녹색 (L2), 빨간색 (L3); 중성선: Light blue; Ground wire: Yellowgreen twocolor.
지침
- Differences in standards: Some countries may retain the old standards due to historical reasons (such as the old version in the UK). It is recommended to refer to the latest local electrical codes.
- Highvoltage systems: The colors of wires in highvoltage power distribution may be different (예를 들어, highvoltage live wires in China are red, 녹색, and yellow, and there is no neutral wire). It is necessary to refer to specific engineering standards.
- Safety principles: Regardless of the color, 배선할 때, it is necessary to confirm the function of the wires through labels, 그림, or a multimeter to avoid misoperation.
For accurate information, it is recommended to consult the local electrical installation codes (GB와 같은 7251 중국에서, NEC in the United States, 안에 60446 in the European Union, 등.) or consult a professional electrician.
