Multifamily Dwelling Unit Load Calculations

Multifamily Dwelling Unit Load Calculations

Although load calculations for multifamily units are similar to those for single-family units, there are a few differences you better know.

A multifamily dwelling is one that contains three or more dwelling units [Art. 100]. Though similar, single and multifamily dwellings have distinct differences.

The wiring method used for a single-family dwelling unit is often Type NM cable (unless local codes don’t allow it). Depending on factors such as the building construction type and local codes, a multifamily dwelling may require the use of metal raceways or metallic-sheathed cable [334.10, Annex D].

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