2026 NEC Changes: General Requirements

From cybersecurity threats to arc flash calculations, the 2026 NEC®'s general requirements are transforming how electrical professionals approach safety and compliance in an increasingly complex technological landscape. This course covers critical changes to Article 110, including new arc flash labeling requirements that mandate incident energy calculations for every commercial panel installation, clarified working space rules, and the groundbreaking requirement that both NEC® rules and manufacturer instructions must be followed equally. Participants will master essential topics including reconditioned equipment standards, updated electrical connection requirements for dissimilar metals, revised "within sight" definitions, and the expanded scope of equipment subject to working clearance requirements now that Chapter 8 communications systems must comply with general safety rules.

By the end of this course, you'll be able to:

• Explain why Annex J was removed.
• Identify if the NEC or product instructions supersede one or the other.
• Recall the general requirements regarding short circuit current ratings.
• State the requirements for connections of dissimilar metal.
• Explain the marking rules for high leg delta systems.
• Recall the revised requirements for arc flash labeling.
• List the rules for equipment servicing.
• Describe what reconditioning means.
• Explain the revised working space requirements.
• Define what “within sight” means in the NEC.
• Recall where the general requirements for connections over 1000 volts are found.