Which Informative Annex D example outlines the steps for the Optional Calculation for multifamily dwellings?

The example that outlines the steps for the Optional Calculation for multifamily dwellings is indeed found in Annex D, specifically labeled as D4(b). This section provides detailed guidance on how to conduct the Optional Calculation which is essential for determining the correct electrical load for multifamily residential units.

This example is particularly valuable as it tailors the process to multifamily dwellings, ensuring that all applicable factors and parameters considered in the calculation meet the specific needs and code requirements for these types of constructions. The inclusion of various scenarios and the step-by-step approach in D4(b) helps professionals accurately assess and manage the electrical load, which is crucial for safety and compliance with electrical codes.

The other examples in Annex D address different contexts or calculation methods that may not specifically cater to multifamily dwellings, leading to variations that aren't suitable for this specific situation. The focus and clarity provided in D4(b) make it the correct reference point for anyone involved in this type of calculations in the context of multifamily housing.