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  • Users: Nandkumar
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  1. Nandkumar

    IS-9079 and IP-55

    I have a motor and pump for hydrant system belonging to class S1 and conforming to IS-9079 located out door. I recall that motors should conform to IP-55 for out door service. I was wondering whether this selection is correct. Can it withstand the out door service. Also, is there any other IS...
  2. Nandkumar

    Lightning protection for buildings

    I have a question. There is steel structure and is not protected with lightning protection. The designer claims that structure itself can act as lightning conductor. So, there is no need for any further lightning protection. I feel you cannot use the structure as lightning protection. But I...

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