Where can the load calculation requirements for adding a structural addition to an existing dwelling be found?

The load calculation requirements for adding a structural addition to an existing dwelling can be found in Article 220.12 or 220.14 of the National Electrical Code (NEC). Article 220 specifically addresses the branch circuit and feeder loading calculations necessary for various types of electrical installations, including residential settings.

Article 220.12 outlines the general lighting load calculations needed for calculating the demand when assessing the added load to a dwelling. This is crucial for ensuring that the existing electrical infrastructure can handle the increased demand caused by the structural addition. Similarly, 220.14 deals with specific loads and their calculation methodologies, providing specific guidelines on how to derive load requirements accurately.

The other options do not specifically address load calculation requirements related to structural additions. For example, Section 210.3 pertains more to branch circuits without focusing on the broader load calculation processes. The general lighting section may provide insightful information, but it doesn’t cover the comprehensive requirements found in Article 220. Appendix A generally includes ancillary information that supports the NEC but does not specifically outline load calculation requirements.