Electrical Panel Label Requirements
Available shortcircuit current is the current in amperes avail able at a given point in the electrical system. Doors and hinged panels.
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Good morning everyone i have a question regarding panel labeling requirements.
Electrical panel label requirements. Tying it all together. Would this sticker cover the 2012 nfpa70e minimum labeling requirements for panels and electrical equipment. Suitability of equipment for an identified purpose may be evidenced by listing or labeling for that identified purpose.
Part of the changes were driven by the fact that as more companies used industrial control panels there was a significant increase in the misapplication of control products and related equipment. We are working with a new industrial electrical contractor on a couple of new machine. Working space around the breaker panel must be at least 30 inches wide and 72 inches from the ground up.
Doors and hinged panels must have at least at least a 90 degree opening. The ins and outs of electrical labeling part 1 of 2 service equipment. The purpose of this section is to provide electrical identification for electrical equipment raceways and conductors.
Until that time industrial control panels had been installed based upon general electrical requirements from several different areas in the nec. The panel door must be able to open at least 90 degrees. This available shortcircuit current is first determined at the secondary termi nals of the electric utility transformer as given by the electric utility engineer.
Mechanical strength and durability including for parts designed to enclose and protect other equipment the adequacy of the protection thus provided. These are important characteristics that we cannot forget whether inspecting or creating such labels. Lets take a quick tour through a typical factory to determine some.
Figure 2 illustrates an example of this label. Section 12electrical safety requirements october 2009 12 9 figure 12 3working space requirements for rear or side access. The labels must be permanently affixed to the equipment or wiring method and not be handwritten.
Breaker panel must be at least 4 feet off the ground but no higher than 6 feet. Provide labels nameplates panel directories and color coding as specified herein and according to attached electrical identification drawings. Keep working space clear at all times.
And finally the labels have to be of sufficient durability to withstand the environment. Having traceability from beginning to end is facilitated by proper. There have been few if any other labels on our equipment and the push is on to rectify our deficiencies.
Motor control centers feeders switchboards and panels.
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