What is the minimum general lighting load, in VA per square foot, required by the NEC for a store?

The minimum general lighting load required by the NEC (National Electrical Code) for a store is indeed outlined in Article 220, which specifies that the minimum value is 3 volt-amperes (VA) per square foot. This value is established to ensure adequate illumination for commercial spaces, which are expected to accommodate various activities and provide a safe and comfortable environment for customers and employees.

The specification of 3 VA per square foot takes into consideration the lighting needs associated with retail environments, where visibility for products and signage is crucial. By adhering to this minimum standard, store owners can ensure that they are providing sufficient lighting levels as required by code, which also plays a role in factors such as safety and energy efficiency.

This figure is supported by various building codes and regulations to maintain consistency in how lighting loads are calculated. In comparison, the other choices reflect different standards or loads that may apply under different circumstances, but do not meet the NEC requirements for a store environment specifically.