電線管太さの選定
| 電線太さ |
電線本数 (本) |
裸銅線重量表 (kg/km) |
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
| 電線管の最小太さ |
| 1.6mm |
15 |
15 |
15 |
25 |
25 |
25 |
25 |
31 |
31 |
31 |
17.83 |
| 2.0mm |
15 |
19 |
19 |
25 |
25 |
25 |
31 |
31 |
31 |
31 |
28 |
| 2.6mm5.5sq |
15 |
25 |
25 |
25 |
31 |
25 |
25 |
31 |
39 |
39 |
48 |
| 8sq |
15 |
25 |
25 |
31 |
31 |
39 |
39 |
39 |
39 |
51 |
71 |
| 14sq |
15 |
25 |
31 |
31 |
39 |
39 |
51 |
51 |
51 |
51 |
126.7 |
| 22sq |
19 |
31 |
31 |
39 |
51 |
51 |
51 |
51 |
63 |
63 |
179.9 |
| 38sq |
25 |
39 |
39 |
51 |
51 |
63 |
63 |
63 |
63 |
75 |
334 |
| 50sq |
25 |
51 |
51 |
51 |
63 |
63 |
75 |
75 |
75 |
75 |
435 |
| 60sq |
25 |
51 |
51 |
63 |
63 |
75 |
75 |
75 |
- |
- |
537 |
| 100sq |
31 |
63 |
63 |
75 |
75 |
- |
- |
- |
- |
- |
- |
| 125sq |
39 |
63 |
63 |
75 |
- |
- |
- |
- |
- |
- |
- |
| 150sq |
39 |
63 |
63 |
75 |
- |
- |
- |
- |
- |
- |
- |
| 200sq |
51 |
75 |
75 |
- |
- |
- |
- |
- |
- |
- |
- |
| 250sq |
51 |
75 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
許容電流減少係数
| 管内電流数 |
ビニール管数 |
金属管内 |
| 3本以下 |
0.60 |
0.70 |
| 4本以下 |
0.53 |
0.63 |
| 5本〜6本 |
0.46 |
0.56 |
| 7本〜10本 |
0.38 |
0.46 |
|