ISI नुसार इलेक्ट्रिकल वॉटर हीटर आणि कनेक्टिंग केबलच्या शरीरातील इन्सुलेशन काय असावे?

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 1
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  1. 0.01 किलो Ω 
  2. 1.00 किलो Ω
  3. 0.01 मेगा Ω
  4. 1.00 मेगा Ω

Answer (Detailed Solution Below)

Option 4 : 1.00 मेगा Ω
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  • वॉटर हीटर चालू करण्यापूर्वी किंवा स्थापित करण्यापूर्वी, ISI नुसार इन्सुलेशन रोध 1.00 MΩ पेक्षा कमी नसावा.

I.E. नियम 48 नुसार:

  • इन्स्टॉलेशन आणि पृथ्वीच्या वायरिंगमधील इन्सुलेशन रोध अशा मूल्याचा असावा की गळती विद्युतप्रवाह भागाच्या 1/5000 किंवा पूर्ण लोड विद्युतप्रवाहाच्या 0.02 टक्के पेक्षा जास्त नसावा.
  • लाइटिंग सर्किटमध्ये अनुज्ञेय व्होल्टेज ड्रॉप पुरवठा व्होल्टेजच्या 2% अधिक एक व्होल्ट आहे.
  • पॉवर इंडस्ट्रियल सर्किटमध्ये जास्तीत जास्त परवानगीयोग्य व्होल्टेज ड्रॉप घोषित पुरवठा व्होल्टेजच्या 5% पेक्षा जास्त नसावे.
  • कोणत्याही वायरिंगच्या स्थापनेचा इन्सुलेशन रोध 1MΩ पेक्षा कमी नसावा.
  • पृथ्वीचा रोध एक Ω च्या मूल्यापेक्षा जास्त नसावा.
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