Explanation of NEC Section 400 regarding flexible cords and cables
Section 400 of the National Electrical Code Focuses on the use of flexible ropes and cables in electrical installations. Flexible ropes and cables are portable wiring harnesses made of stranded conductors with durable, flexible insulation, used to provide power to mobile or temporary equipment where fixed wiring is not suitable. While these cables are flexible […]
Explanation of NEC Section 440 regarding air conditioning and refrigeration equipment
Hermetic motors, which are sealed units that operate immersed in refrigerant, are at the heart of air conditioning and refrigeration systems. Their specialized behavior means they cannot be treated like standard engines. That’s why NEC Section 440 exists: to supplement Section 430 and other NEC Sections with specific rules for short circuit protection, conductor sizing, […]
Explanation of NEC Section 600 regarding electrical signs and detail lighting
Electrical signs and outdoor lighting are highly visible, safety-sensitive systems with unique code requirements for conductors, grounding and equipment access. They are the focus of Section 600 of the National Electrical Code. Every commercial building needs a visual identifier, and most often, this comes in the form of an electrical sign. For this reason, NEC […]
Build a stronger sales team: Here is how one manager has transferred his section
When Sean Wheeler entered the role of sales manager in the best home care services in Bartlett, Tennessee, he knew he had a job to do – quickly. The leadership of the sales team is not a small task, and like many of the leaders who are emerging in the home services industry, Sean was […]
NEC Section 344 Explanation of Rigid Metal Conduit (RMC)
Section 344 of the NEC (National Electrical Code) covers materials, installation, and protection requirements for solid metal conduit in electrical systems. Here’s what you need to know, and a detailed breakdown of what the article covers: Definition and scope (344.1) Section 344 applies to rigid metal conduit (RMC), which is thick-walled threaded tubing used to […]
Explanation of NEC Section 100 definitions
NEC Article 100 covers the basic definitions used throughout the code to ensure clear understanding and consistent application. Terms explained in the article appear throughout the blog. Below are the basic definitions from Section 100 of the NEC, highlighted for clarity. Basic definitions from the first part (general): Accessible (as applied to equipment): Equipment that […]
What are the electrical requirements for Class 1 Section 2?
Class 1, Section 2 electrical requirements are part of the National Electrical Code (NEC) and are designed to ensure safety in hazardous locations where flammable gases, vapors, or liquids may be present. Category 1 locations deal with gases or vapors, and Category 2 refers to environments where these substances do not occur naturally but can […]
Explanation of NEC Section 392 regarding cable trays
NEC Article 392 describes cable trays, their components, proper connection methods for cable trays, and when and where they are allowed and not allowed. It also focuses on construction and installation practices for cable trays. The following is a summary of the most important points contained in Article 392 of the National Constitution: Cable tray […]