Understanding NEC Article 665: Induction and Dielectric Heating Equipment NEC Article 665 provides safety standards for the construction and installation of induction and dielectric heating equipment. These systems are primarily used in industrial and scientific applications, with a focus on processes like heating, melting, and welding for metals and nonmetals. Scope of Article 665 This […]
Understanding NEC Article 660: X-Ray Equipment NEC Article 660 provides safety standards for the installation, operation, and maintenance of X-ray equipment used in industrial, laboratory, and nonmedical applications. These requirements address electrical safety, grounding, guarding, and the operation of equipment under high-voltage conditions. Scope of Article 660 This article applies to: Exclusions: Informational Notes: Key […]
Understanding NEC Article 650: Pipe Organs NEC Article 650 provides electrical safety requirements for the circuits and equipment used in pipe organ installations. These systems include control circuits for keyboards and pipe-sounding apparatus, integrating traditional organ components with modern electronic enhancements. Scope of Article 650 This article applies to: Informational Note: Pipe organs are typically […]
Understanding NEC Article 647: Sensitive Electronic Equipment NEC Article 647 provides specialized requirements for electrical systems designed to power sensitive electronic equipment. These systems operate at 120 volts line-to-line and 60 volts to ground, reducing objectionable electrical noise that could interfere with the performance of audio, video, and similar equipment. Scope of Article 647 This […]
Understanding NEC Article 646: Modular Data Centers NEC Article 646 outlines the requirements for Modular Data Centers (MDCs), which are self-contained, preassembled enclosures housing Information Technology Equipment (ITE) and support systems. These centers ensure safe and efficient operation while meeting modern needs for scalable and portable data processing solutions. Scope of Article 646 This article […]
Understanding NEC Article 645: Information Technology Equipment NEC Article 645 provides standards for the installation, wiring, and grounding of information technology equipment (ITE) in dedicated rooms. This ensures the safety and reliability of systems used in critical business and industrial applications, from data centers to specialized IT environments. Scope of Article 645 This article applies […]
Understanding NEC Article 640: Audio Signal Processing, Amplification, and Reproduction Equipment NEC Article 640 outlines the standards for electrical systems used in audio signal generation, recording, processing, amplification, and reproduction. It addresses the safe installation and use of audio systems in environments ranging from residential setups to large public venues like theaters, stadiums, and event […]
Understanding NEC Article 630: Electric Welders NEC Article 630 provides safety standards for electrical systems used with electric welding and cutting equipment. This includes arc welders, resistance welders, plasma cutters, and similar systems. The article ensures the safe operation of these devices in industrial, commercial, and construction settings. Scope of Article 630 This article covers: […]
Understanding NEC Article 626: Electrified Truck Parking Spaces NEC Article 626 addresses the requirements for electrified truck parking spaces (ETPS), enabling trucks to connect to electrical supplies for heating, refrigeration, and driver convenience without running their engines. This promotes energy efficiency and reduces emissions while providing a standardized framework for safe and functional installations. Scope […]
Understanding NEC Article 625: Electric Vehicle Power Transfer System NEC Article 625 establishes the safety standards for electric vehicle (EV) power transfer systems, including conductive, inductive, and wireless charging methods. It addresses installations in residential, commercial, and public settings, covering equipment construction, installation, and operational requirements. Scope of Article 625 This article applies to: Key […]
