Journeyman Electrician Practice Exam

For calculating the general lighting load in a dwelling, which area is excluded?

1. A closed garage

2. An open porch not adaptable for future use

3. A living room

4. A kitchen

The correct answer is: An open porch not adaptable for future use

The correct answer is that an open porch not adaptable for future use is excluded when calculating the general lighting load in a dwelling. This is because, in the National Electrical Code (NEC), certain areas of a dwelling are treated differently when calculating the required general lighting load. An open porch, particularly one that is not designed for future use, is considered a space that does not require general lighting as it does not serve a permanent function in the home. The focus of general lighting load calculations is typically on areas that are regularly used for living purposes, such as living rooms, kitchens, and bedrooms, where lighting is expected to be more constant and functional. On the other hand, the other areas listed, such as a closed garage, living room, and kitchen, are all integral parts of a dwelling that typically require adequate lighting for functional use and safety, thereby making their inclusion in lighting load calculations necessary.