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| Ӌ(j)X늉220Vؓ(f)d裩 | ||
| mm² | ؓ(f)ɾ | 늉p |
| 2.5 | 20KWm ((bio)(zhn)ֵ | 1% |
| 4 | 4/2.5=1.6 1.6*20kwm=32kwm | 1% |
| 6 | 6/2.5=2.4 2.4*20kwm=48kwm | 1% |
| 10 | 10/2.5=4 4*20kwm=80kwm | 1% |
| 16 | 16/2.5=6.4 6.4*20kwm=128kwm | 1% |
| 25 | 25/2.5=10 10*20kwm=200kwm | 1% |
| 35 | 35/2.5=14 14*20kwm=280kwm | 1% |
| 50 | 50/2.5=20 20*20kwm=400kwm | 1% |
| 70 | 70/2.5=28 28*20kwm=560kwm | 1% |
| 95 | 95/2.5=38 38*20kwm=760kwm | 1% |
| 120 | 120/2.5=48 48*20kwm=960kwm | 1% |
| 150 | 150/2.5=60 60*20kwm=1200kwm | 1% |
| ؓ(f)ɾ=(do)L(zhng)*ؓ(f)ɹ= KWm | ||
| 磺X(do)4mm²40mL(zhng)220V1KW늠t_(ti)늉 | ||
| 1.Ӌ(j)ؓ(f)ɾأ2KW*40m=80kwm | ||
| 2. 4mm²늉p1%r(sh)ؓ(f)ɾ؞32kwm | ||
| 3.·늉p飺80kwm/32kwm=2.5% | ||
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