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Why does the code allow 600 volt insulation on the neutral on circuits of 1kv and over?

Are there any problems associated with using a large VFD on a much smaller load (200 hp VFD and 100 hp motor)

The new service entrance equipment and ATS are away from the building on an equipment pad with the generator. Could the building be treated as a second building and use the provisions of 250-32(b)(2), bond the neutral and ground bars back together at the old service entrance equipment and...

I just added a new 120/208 volt standby generator to an existing system. To accommodate the addition, I added a new service entrance breaker which feeds the ATS which feeds the old service entrance equipment. The contractor was to install a new grounding electrode system connected at the new...

Is there a difference between inverter duty motors and inverter capable motors?

So when running the plant on the generator, we have no GFP. If the GFP trips the utility main, the generator will not sense normal power when restored. Is this correct? Do you see any other issues with this scenario?

I have a 3000A grounded wye service with main breaker, GFP and 3 pole ATS. The generator neutral and ground are not bonded together and are tied to the respective buses of the swithcboard. Is this a code violation?