Temperature of Conductor

Multiplying Factor for Adjustment to Resistance at

Temperature of Conductor

Multiplying Factor for Adjustment to Resistance at

°C

°F

25°C (77°F)

20°C
(68°F)

°C

°F

25°C
(77°F)

20°C
(68°F)

0

32.0

1.107

1.085

46

114.8

0.925

0.908

1

33.8

1.102

1.081

47

116.6

0.922

0.905

2

35.6

1.098

1.076

48

118.4

0.918

0.901

3

37.4

1.093

1.072

49

120.2

0.915

0.898

4

39.2

1.089

1.067

50

122.0

0.912

0.895

5

41.0

1.084

1.063

51

123.8

0.909

0.892

6

42.8

1.079

1.059

52

125.6

0.906

0.889

7

44.6

1.075

1.054

53

127.4

0.902

0.885

8

46.4

1.070

1.050

54

129.2

0.899

0.882

9

48.2

1.066

1.045

55

131.0

0.896

0.879

10

50.0

1.061

1.041

56

132.8

0.893

0.876

11

51.8

1.057

1.037

57

134.6

0.890

0.873

12

53.6

1.053

1.033

58

136.4

0.887

0.870

13

55.4

1.048

1.028

59

138.2

0.884

0.867

14

57.2

1.044

1.024

60

140.0

0.881

0.864

15

59.0

1.040

1.020

61

141.8

0.878

0.861

16

60.8

1.036

1.016

62

143.6

0.875

0.858

17

62.6

1.032

1.012

63

145.4

0.872

0.856

18

64.4

1.028

1.008

64

147.2

0.869

0.853

19

66.2

1.024

1.004

65

149.0

0.866

0.850

20

68.0

1.020

1.000

66

150.8

0.863

0.847

21

69.8

1.016

0.996

67

152.6

0.860

0.844

22

71.6

1.012

0.992

68

154.4

0.858

0.842

23

73.4

1.008

0.989

69

156.2

0.855

0.839

24

75.2

1.004

0.985

70

158.0

0.852

0.836

25

77.0

1.000

0.981

71

159.8

0.849

0.833

26

78.8

0.996

0.977

72

161.6

0.846

0.830

27

80.6

0.992

0.973

73

163.4

0.844

0.828

28

82.4

0.989

0.970

74

165.2

0.841

0.825

29

84.2

0.985

0.966

75

167.0

0.838

0.822

30

86.0

0.981

0.962

76

168.8

0.835

0.819

31

87.8

0.977

0.958

77

170.6

0.833

0.817

32

89.6

0.974

0.955

78

172.4

0.830

0.814

33

91.4

0.970

0.951

79

174.2

0.828

0.812

34

93.2

0.967

0.948

80

176.0

0.825

0.809

35

95.0

0.963

0.944

81

177.8

0.822

0.807

36

96.8

0.959

0.941

82

179.6

0.820

0.804

37

98.6

0.956

0.937

83

181.4

0.817

0.802

38

100.4

0.952

0.934

84

183.2

0.815

0.799

39

102.2

0.949

0.930

85

185.0

0.812

0.797

40

104.0

0.945

0.927

86

186.8

0.810

0.794

41

105.8

0.942

0.924

87

188.6

0.807

0.792

42

107.6

0.938

0.921

88

188.6

0.805

0.789

43

109.4

0.935

0.917

89

192.2

0.802

0.787

44

111.2

0.931

0.914

90

194.0

0.800

0.784

45

113.0

0.928

0.911