The UL 508A Listing Mark on an industrial control panel provides evidence of third party certification to the municipal inspection authority and to the purchaser of the panel.A UL 508A Listing Mark shows that the panel complies with an acceptable safety standard.
Ul 508A Book Install The PanelTo allow the installer to properly install the panel in accordance to National Electrical Code (NEC) and other codes, electrical ratings and instructions are to be clearly explained on the panel. For open type equipment, the assembly is installed in an enclosure provided by others, or at the installation site. Any of the outdoor enclosures or cabinets manufactured by Purcell Systems that carry the UL 508A Listing Mark would be classified as enclosed type, and complies with the applicable requirements for outdoor panels noted in the UL 508A standard. These standards ensure public safety, and provide assurances that the electrical control panel is compliant with national and local electrical codes. Through periodic audits of the manufacturers, UL can insure the manufacturer continues to meet the UL requirements for 508A certification. The UL Mark on a component means that UL has evaluated and tested samples of this component and has concluded that they meet the UL requirements. This protects the quality and integrity of the enclosure and provides guarantee of safe performance. The GENERAL section addresses requirements for all enclosures, and these requirements include. Eddie Guidry Sep 21, 2015 Article 409 Industrial Control Panels of the National Electrical Code (NEC) has been a part of the Code since the 2005 edition. Industrial control panels are defined in Art. Basically, these panels can be any assembly of relays, pushbuttons, motor controllers, etc. Getting a listing for custom control panels is typically not reasonable due to the high cost of certification and testing for each unique panel. Therefore, there are thousands of industrial control panels built in garages and shops across the U.S. Since the term control circuit components isnt defined, its up to the Authority Having Jurisdiction to ultimately decide what this term means. Applying a little bit of common sense, however, along with the definition in Art. Without a doubt, if there is any sort of power for receptacles, motor controllers, breakers, fuses, overload relays, etc., the short circuit rating has to be marked on the panel. ![]() Most of the time, the original control panels were built fit for the purpose, and no future space was allowed. So any time relays or terminals need to be added, the conditions are ripe to violate this requirement. But for those of us in the industrial sector who deal with control panels, having a firm understanding of Art. Prior to Jan. 26, 2012, listed control panels were evaluated to UL 60947-4, unless a customer specifically requested it be evaluated per UL 508. After Jan. 26, 2012 and up to Jan. UL 60947-4 only, but revisions to existing listed control panels may be evaluated using UL 508 (if requested). After Jan. 27, 2017, all listed industrial control panels must meet UL 60947-4-1 specifications. Latest in Maintenance, Repair Operations A Contractors Guide to Effective Firestopping Oct 09, 2020 Fire Security Fire Security The ABCs of Arc Flash Safety Oct 08, 2020 NECA Show Coverage How to Keep Your Fleet Clean During a Pandemic Oct 07, 2020 Coronavirus News Code-Compliant Energy Storage Systems Oct 07, 2020 National Electrical Code Sign up for ECM eNewsletters Sign Up Safety Fire Security A Contractors Guide to Effective Firestopping Why this task is often overlooked by electrical professionals, even though its required by code, and how to ensure a safe installation Tim Pierce Oct 09, 2020 Firestopping is an often misunderstood construction practice. This article examines what firestopping is and why its necessary in wall, floor, and ceiling penetrations. The bottom line is that electricians and other trades must prevent fire and smoke from traveling throughout a building via the holes theyve drilled in walls, ceilings, and floors for conduit, cable trays, piping, etc. But before delving into the details, lets start by reviewing the two types of fire protection in structures: active and passive. Log in to view the full article Related Locking Up the Residential Solar Market May 19, 2020 Safety Ghost Ship Fire Update: Arrests Made, Report Released Detailing Tragic Events Jun 28, 2017 Accidents Investigations Accidents Investigations The Case of the Computer Room Fire Jun 20, 2016 Accidents Investigations Accidents Investigations Solar Under Fire Mar 20, 2014 Fire Security Fire Security Facebook icon Twitter icon LinkedIn icon YouTube icon About Us Contact Us Advertise California Do Not Sell Privacy Cookie Policy Terms of Service 2020 Endeavor Business Media, LLC. All rights reserved.
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