在空氣中

直埋土壤中

mm ²

mm

mm

mm

kg/km

Ω/km

KV

A

A

2×4

0.7

1.8

14.4

325

≤ 4.61

3.5

37

46

2×6

0.7

1.8

15.4

387

≤ 3.08

3.5

47

56

2×10

0.7

1.8

18.4

538

≤ 1.83

3.5

64

76

2×16

0.7

1.8

20.5

700

≤ 1.15

3.5

84

98

2×25

0.9

1.8

23.6

939

≤ 0.727

3.5

115

126

2×35

0.9

1.8

25.6

1174

≤ 0.524

3.5

141

152