NFPA — Electrical Standard for Industrial Machinery —a document purposed with providing information for the application of electrical equipment or systems supplied as part of industrial machines—is applicable to:. The specific mentioning of industrial machines supplied from a nominal voltage of volts or less is notable for the standard, as it is one of the primary changes made to the edition. Remember that modern electrical machine tool equipment can vary in size, scope, and performance.
It can involve a simple single-motor machine or contain multi-motored automatic machines comprising remarkably intricate electrical control systems. Due to the variability of industrial machines, NFPA is written to cover the range found in use.
Additional changes to NFPA include the following:. NFPA addresses topics like operating conditions, disconnecting means, protection from electrical hazards, and control circuits, but the document is often known for its wire color code. As can attest anyone who has ever witnessed the movie trope in which the hero is pressed to cut to correct color wire to extinguish some type of catastrophe, being able to decipher cable and component purpose is paramount.
Of course, standardization plays an integral role in this; for a certain color to denote a certain process, it should be used for that purpose collectively.
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