Industrial Control Panels UL 508A and Short-Circuit Current Ratings

Description

Click here to download this course description in PDF.

The introduction of the new Article 409 for Industrial Control Panels in the 2005 edition of the National Electrical Code (NEC) drew increased attention to installations of industrial control panels. Industrial control panels (ICPs) with the UL Mark are installable to the NEC and have a distinct competitive edge in the marketplace.

The first day of the workshop focuses on how to construct general use industrial control panels in accordance with the Standard for Industrial Control Panels, UL 508A, 1st Edition. It covers UL 508A, general use ICP construction, rating and marking requirements, sections 1-61; enclosure construction requirements, sections 62-64; component requirements, supplement A and appendices A and B.

The second day instructs existing industrial control panel customers on how to establish short-circuit ratings for individual industrial control panels in accordance with the requirements outlined in the new Standard for Industrial Control Panels, UL 508A, 1st Edition, Supplement B.  This supplement is the only method specifically noted as being approved by the 2005 NEC.  Each participant will receive a participant workbook and a copy of the UL 508A Standard.

The topics covered in this workshop include:

• Introduction to industrial control panels
• Development of UL 508A
• Project categories & UL directory information
• Part 1 of UL 508A-general use
• Part 1 of UL 508A-construction
• Power circuits
• Control circuits
• Ratings and markings

Objectives

Upon completion of this workshop, you will be able to:

• Discuss and define power circuit and control circuit construction requirements
• Define and apply appropriate electrical spacing between un-insulated parts of components
• Determine proper segregation of insulated conductors of separate circuits
• Determine the appropriate branch circuit protection sizing and individual component selection
• Describe transformer over-current protection
• Navigate UL 508A Table SA1.1 and the UL Web to determine component suitability/ cost saving methods
• Execute proper application of supplementary protectors
• Explain panel rating and marking requirements
• Identify a short circuit current rating marking
• Demonstrate through course acvitities how to identify and calculate short-circuit ratings

Target Audience

• Panel product designers and engineers
• Regulatory compliance engineers
• Panel manufacturers

Continuing Education Units (CEUs)

Contact your local jurisdiction for CEU recognition.

UL University's workshops are designed for and intended to serve individuals using and relying upon UL services. UL University reserves the right to limit workshop attendance strictly to the foregoing. In addition, UL University reserves the right to change, reschedule or cancel any workshop at any time. UL shall not be responsible for any consequential or other losses resulting from the cancellation or postponement of this workshop such as airline and other travel/personal expenses.

UL University accepts the following forms of payment for registration: Visa, MasterCard, American Express and Invoice/PO. Please note that Invoice/PO is not accepted for online courses.