Question
Download Solution PDFWhat should be the insulation between the body of the electrical water heater and the connecting cable as per ISI?
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:
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