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We selects the cable based on the following criteria: - short circuit withstand. - Full load current. (de-rating factor is included here) - voltage drop. In most cases of low voltage cable installation to a motor, the numbers of cable and cable sizes are decided by the voltage drop, especially...

Thanks for your helps. I have also looked for this requirement in various standards, but have found nothing.

Hello, I am working in a industrial project. Our contractor explained that it is not necessary to provide di-electric mat in front of the 6.6KV swithcboards. The project specfication mentioned nothing about this issue. Who can tell me where is in the IEC standard that requires to provide...