Based on the 2020 National Electrical Code. Article 220 of the 2020 National Electrical Code (NEC) contains the requirements for calculating demand loads for branch circuits, feeders, and services.

Understanding how to use load capacity charts is crucial for proper selection and safe application of a number of machine types, but perhaps none more so than telescopic handlers. These versatile ...

Just like when operating cranes, understanding how to read load charts, and applying that information to the operation of a digger derrick is critical. In many ways, digger derricks are similar to ...

SOLAR: Solar heat gain through glass facades is among the inputs that ASHRAE Standard 183 requires engineers to model in three dimensions. June 3, 2026 Here is something I have noticed presenting at ...

The rules for feeder and service load calculations differ from those for branch-circuit calculations. Do you know the differences? With branch circuits (Art. 220, Part II), you’re basically ...