| | | | | | How well do you know the Code? Think you can spot violations the original installer either ignored or couldn’t identify? Hint: Faulty fixture. |
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| | Sponsored | | Data center projects offer unique challenges when it comes to electrical conduit systems. Common challenges include conduit repairs due to burn-through, wire replacement and pulling. Champion Duct® fiberglass elbows deliver solutions for these and other project challenges. |
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| | | | Fill in the blank. A snap switch shall not be grouped or ganged in enclosures with other snap switches unless they are arranged so that the voltage between adjacent devices does not exceed _____ volts. |
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| | Sponsored | | Romex® NM-B cable is the trusted choice for residential pro contractors nationwide, delivering reliable performance, straightforward installation, and dependable quality for dry-location wiring applications. Its proven design, including the smooth-pulling SIMpull® jacket and Copper-Only conductors, gives pros the confidence they need for safe, code-compliant work that holds up over time. |
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| | | | Many electrical inspection failures stem from small, preventable oversights rather than major Code violations. In this episode of Code Conversations, EC&M Editor-in-Chief Ellen Parson talks with NEC expert Paul Abernathy about common inspection issues, including incomplete panel directories, blocked working spaces, and grounding and bonding deficiencies... |
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| | Sponsored | | Data center power demands are colliding with grid constraints, pushing developers toward microgrids, BESS, and bring-your-own-power strategies—and changing what electrical infrastructure looks like inside the fence line. Join Matt Fredericks of Champion Fiberglass® for a practical look at the conduit, grounding, fire-code, and installation challenges... |
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| | | The 2026 NEC introduced major revisions for Chapter 3, including stricter rules on raceway welding, new conductor size options for 10A circuits, and clarified requirements for enclosures with switches. |
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| | Sponsored | Penn Aluminum BLUE LIGHTNING EMT is becoming the preferred choice for data centers and other large projects. At 1/3 the weight of steel, it offers jobsite efficiency and safety that really add up. It also costs less than steel EMT, and is internally coated with our UL-listed wire pulling compound for reduced resistance and easier wire pulling. Plus, it has no risk of zinc whiskers in data centers. |
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| | | This article explores the NEC 210.12(E) requirements regarding AFCI protection during circuit modifications, emphasizing the distinction between replacements and extensions, and highlighting the importance of proper interpretation to ensure code compliance. |
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| | | Ground-fault circuit-interrupter protection for personnel shall be provided for electric space heating cables installed in electrically heated floors of _____. |
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| | | Fill in the blank. At carnivals, fairs, and circuses, equipment that is _____ to the general public and supplied from a 125V, single-phase, 15A or 20A branch circuit shall be GFCI-protected. |
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| | Sponsored | You already earned the license. Now earn the credential that proves elite code mastery. The CMECP® Program sharpens NEC expertise, elevates professional credibility, and helps Master Electricians stand out as trusted leaders in a competitive industry. |
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| | | See the latest Code violations from NEC Consultant Russ LeBlanc. First, Russ looks at yet another working space violation and explains why this is a serious issue. Next, a dangling LFNC presents several problems. |
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Members Only | This edition highlights a violation of Sec. 352.10(K) because the wrong type of conduit was used for this outdoor installation. Additionally, there are broken clips that violate Sec. 352.30. You may think that using a tree to install this light fixture would be a Code violation, however it is permitted by Sec. 410.36(G). The caveat is that installers... |
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| | | How well do you know the Code? Think you can spot violations the original installer either ignored or couldn’t identify? Here's your chance to moonlight as an electrical inspector and second-guess someone else's work from the safety of your living room or office. Can you identify the specific Code violation(s) in this photo? Hint: Botched breaker blanks... |
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| Are multi-wire branch circuits permitted to supply life safety lighting and power circuits in a health care facility? |
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