Last edit: 03/03/2023
TARGET GROUP: electrical development department
SCOPE: At the end of this training on UL 508A you know how to design Machinery Control Panels in compliance with both USA and Canada Electrical Standards
MAIN STANDARDS: UL 508A: it is the reference standard for the design, engineerigìng and manufacturing of Industrial Control Panel (ICP) in USA.
C22.2 N°286: from Jan 2022 it will be the reference standard for ICP with destination CANADA.
Since a few years, GT Engineering is member of the Standard Technical Panel for UL 508A and member of a few working groups of the CE Code (Canada)
CONTENT:
MODULE 1 (8 hours)
- Machinery Safety: a comparison between Europe and North America on the applicable standards
- The Authority Having Jurisdiction (AHJ)
- Product Certification
- Electrical Distribution Systems in North America
- FLA, FLC – Branch vs Feeder
- Combination Starter Types
- Suitable Components for Feeder circuits
- The use of Supplementary Protectors
- When to use UL 508A and C22.2 N°286
- Terminal Temperature Limitations
- Minimum required spacings in branch and control circuits
- Use of components in the Feeder part of the panel
- Section 29: Cable assembly inside ICP
- Section 28: Expected Field Cable assembly
- Section 30: Disconnect Switches
- Section 31: Branch Circuit sizinf and Protection
- The Tap Conductors
- Machine Supply Circuit and Disconnecting Means
- Protection from Direct Contacts
MODULE 2 (8 hours)
- How to size a feeder
- Ampacity calculation inside ICP according to C22.2 N°286
- CE Code: Rule 4-006
- Control Circuits
- Bonding – Size of Terminal or Bonding Conductor
- Transformer and Power Supply Secondary Grounding
- Identification of Grounding and Grounded Circuit Conductors and Terminals
- Enclosures and Accessibility of Live Parts
- Ventilation Openings
- Bonding
- Wire Bending Space
- Enclosure Environmental Control Devices
- Power Circuits: Components Type, Sizing, Conductor requirements
- Circuit breaking: Component Type, Sizing, Setting
- Combination Motor Controller: Sizing of Motor, Heating loads and Lights
- Feeder Circuits: Components type and Sizing
- Power Transformers: Components type and Sizing
- Control Circuits: Components type and sizing; Low-Voltage Limited Energy Circuits.
- Components and Panels Marking
- Industrial Control Panels
- Calculation of SCCR (Short Circuit Current Rating)
- Tests and Verifications
DURATION: 16 hours
GT Engineering is Member of the UL Standard Technical Panel (STP) for UL 508A; Principal (Special Expert) on the NFPA 79 Technical Committee; Member of WG 4-006 of the CE Code (Canadian Electrical Code C22.1); Member of the ANSI writing subcommittees for B11.0, B11.19, B11.26.