What is the calculated demand for 30 feet of show windows?

To determine the calculated demand for show windows, the relevant guideline from the National Electrical Code (NEC) is that each linear foot of show window is typically calculated at a demand of 200 VA. Therefore, for 30 feet of show windows, the calculation would be:

30 feet x 200 VA/foot = 6,000 VA.

This demonstrates that the demand for lighting and electrical usage in show windows can significantly contribute to the overall load calculation for a service or feeder. In this case, the total demand of 6,000 VA aligns perfectly with the understanding of how to assess requirements for specific applications like show windows, making it the correct choice.