That is the only available table, and Bob did tell you it did not include your building. You have to do you best to assign a value based on a building that most closely resembles yours. I would go with "office building," and use 3.5, since I can imagine the need for a lot of lights in an electronics lab. I don't know if your building is a lab, or a data center, or a manufacturing facility, so my guess might not be the best choice.The only table I found in the Article 220 was table 220.12 ? General Lighting Loads by Occupancy and none of the occupancy listed in this table is the type of occupancy that I can use for my calculation.