Question
Download Solution PDFBefore commissioning or installing a water heater, the insulation resistance should not be less than _____.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- Before commissioning or installing a water heater, the insulation resistance should not be less than 1.00 MΩ as per ISI.
- The insulation resistance between the wiring of installation and earth should be of such a value that the leakage current may not exceed 1/5000 the part or 0.02 percent of the full load current.
- The permissible voltage drop in a lighting circuit is 2% of the supply voltage plus one volt.
- The maximum permissible voltage drop in a power industrial circuit should not be more than 5% of the declared supply voltage.
- The insulation resistance of any wiring installation should not be less than 1MΩ.
- The earth resistance should not exceed the value of one Ω.
According to I.E. Rule 48:
Last updated on Jun 26, 2025
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