In last month's “Code Basics” article, starting on page 56 of the September issue, we spent most of our time discussing Class 1 circuits. Now, it's time to switch gears and focus on Class 2 and 3.

Article 725 provides the requirements for Class 2 circuits in Part III. The definitions for Class 2 circuits can be found in Art. 100. In the November 2020 issue, we discussed the general requirements ...

A new type of device provides designers of automated installations for North America with performance, cost, and safety benefits. Industrial machinery and equipment system designs typically rely on ...