What is the minimum calculation for the total load of show windows per linear foot?

The minimum calculation for the total load of show windows per linear foot is based on established guidelines in electrical codes, specifically those that pertain to the lighting and electrical requirements for commercial displays. The value of 200VA per linear foot is commonly recognized as the standard for providing adequate power to ensure that lighting and other electrical devices in a show window can function effectively without causing overloads or safety hazards.

This measurement takes into account the average requirements for display lighting, which may include incandescent, fluorescent, or LED fixtures. Adequate load calculations are essential to ensure that the electrical system can handle the demands of these fixtures while also being efficient and safe over time. Using 200VA allows for flexibility and scalability, accommodating varied designs and installations that may require additional power for different types of displays or seasonal decorations.

In practical terms, ensuring that show windows are equipped with sufficient electrical load not only enhances the visual appeal of the display but also maintains compliance with electrical safety regulations. This is why this choice is the most appropriate among the contenders presented.