50A चा विद्युतप्रवाह वाहून नेणाऱ्या तांब्यासाठी खालीलपैकी कोणती तार योग्य आहे?

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 3
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  1. 12 mm2
  2. 16 mm2
  3. 8 mm2
  4. 4 mm2

Answer (Detailed Solution Below)

Option 1 : 12 mm2
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Detailed Solution

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वायर आकार

अँपिअर रेटिंग 60° C (140 फॅ)

अँपिअर (A) मध्ये

75° C (167 फॅ) वर अँपिअर रेटिंग

अँपिअर (A) मध्ये

AWG

mm2

तांबे

एल्युमिनियम

तांबे

एल्युमिनियम

14

2.1

15

--

15

--

12

3.3

20

15

20

15

10

5.3

30

25

30

25

8

8.4

40

30

50

40

7

11.8

50

35

55

45

6

13.3

55

40

65

50

4

21.2

70

55

85

65

2

33.6

95

75

115

90

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