Short Circuit Current Rating

UL508A (MTR) Exam Prep - Overcurrent protection, Short Circuit Current Rating (SCCR) Basics, and UL508A terminology

This seminar will review UL508A basic requirements, overcurrent protection, and provide an understanding of SCCR under UL508A SB.  The seminar will also cover definitions, nameplate markings, component ratings, and spacing requirements. The seminar will prepare you for the UL 508A (MTR) exam. 

0.5 Days Duration
N/A Credits
Course Flyer View Flyer

Upcoming Dates

Date Time Location
TBA TBA TBA

Course Agenda

Presentation Topics:

Part 1 - UL508A - Introduction

  • UL 508A Definitions & Terminology
  • Components

Part 2 - Panel Requirements

  • Spacing requirements
  • Accessibility of Live Parts
  • Enclosure Environmental Control Devices & Maintenance Lighting
  • Power Circuits requirements - Components & Sizing
  • Disconnect Switches - Sizing of disconnect switch & Location
  • Branch Circuit Protection - Sizing for motors
  • Overcurrent Protection of Feeder - Location, Tap rules
  • Transformer protection

Part 3 - Industrial Control Panel Device Basics

  • Control Circuits
  • Supply rating
  • Markings and nameplates

Part 4 - UL 508A Supplement SB

  • Approved Method for Determination of SCCR
  • How to achieve high SCCR
  • Main incoming power circuit components & design options

Part 5 - Sample Industrial Panel Project

  • Component ratings
  • Comparing different designs
  • Obtaining higher SCCR
  • OSCAR Software

Meet the Instructor

Joe Pavia – Eaton Bussmann Field Application Engineer

Joe has been with Bussmann for over 29 years and specializes in training on the design and application of overcurrent protective devices and equipment in electrical distribution systems in accordance with the National Electrical Code® and equipment in accordance with the various product standards. He is a register Professional Engineer for several States, serves on the UL508C / UL61800-5-1 STP, NEMA SC07 & SC22, 2023 NEC CMP-11, and an active member in IEEE, IAEI, and NFPA organizations.

Registration Form