As your career advances, it’s crucial that you understand how to properly perform basic branch-circuit calculations and select appropriately sized branch-circuit conductors. You must also know how to ...

Series Circuit Calculations provides a comprehensive overview of the rules and formulas used to calculate and predict electrical quantities and capacity. Using a direct current (DC) series circuit as ...

Parallel Circuit Calculations provides a comprehensive overview of the rules and formulas used to calculate electrical quantities and capacity. Using a direct current parallel circuit as an example, ...

Feeder and service load calculation requirements can be found in Part III of Art. 220 in the 2014 NEC. As noted in Sec. 220.52(B), "A load of not less than 1,500VA ...

Precision transformer circuits play key roles in applications such as TRA bridges. Here’s an equivalent circuit that surpasses most others when looking to meet those accuracy demands. If you search ...

DNA contains the genetic code that makes humans different from other species of animals and even from each other. Researchers, however, have discovered other uses for the so-called blueprint of life.