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Content Description Per NFPA's requirements, when purchasing NFPA 2021 Standards and/or 2020 NFPA 70 (NEC), you must subscribe to at least one more NFPA Standard to complete your purchase. In order to fulfill this requirement, we automatically add 2019 NFPA 900 to your cart. This title may be removed during checkout if you choose to add a different NFPA standard to your cart, and pricing will be recalculated accordingly.
To align with today\'s NEC®, the 2021 edition of NFPA 79, Electrical Standard for Industrial Machinery, holds critical updates to the global benchmark for industrial machinery safety.
To help prevent electrical incidents and unplanned shutdowns that could result in injury, damage, or loss, be prepared with the latest edition of NFPA 79, Electrical Standard for Industrial Machinery. This must-have companion to both the National Electrical Code®(NEC) and NFPA 70E®, Standard for Electrical Safety in the Workplace®, is newly updated to contend with new technologies and their effects on electrical safety.
Where you need essential protection for operators, equipment, facilities, and work-in-progress, NFPA 79 spells it out. Compliance is vital to reduce risks.
The 2021 edition includes updates for requirements that deal with the full spectrum of equipment—from single-motored drill presses to complex automated manufacturing systems. Updates address concerns from the industry and key changes to companion codes and standards, including the following:
Requirements involving supply circuit disconnecting means, access, operations, and markings are enhanced.
Electromagnetic compatibility (EMC) involving transients are revised.
Requirements on enclosure access and interlocking are changed.
Voltage limitations and rejection capabilities for attachment plugs in protective extra low voltage (PELV) systems are revised.
Language requiring surge-protection devices (SPDs) is updated.
The exception involving insulation monitoring for Class 2 circuits is changed.
Control system grounding requirements are updated.
Emergency stop devices are now to be listed.
Requirements for conductors and equipment supplied by power conversion equipment are updated.
References to 50 volts rms ac and 60 volts dc revised for clarity and consistency.
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About NFPAThe mission of the international nonprofit NFPA, established in 1896, is to reduce the worldwide burden of fire and other hazards on the quality of life by providing and advocating consensus codes and standards, research, training, and education.
The world's leading advocate of fire prevention and an authoritative source on public safety, NFPA develops, publishes, and disseminates more than 300 consensus codes and standards intended to minimize the possibility and effects of fire and other risks.
NFPA membership totals more than 70,000 individuals around the world
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