Oregon and Washington Transformers Installations Course
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This 4 or 8-hour approved course for CEU’s providing a detailed examination of electrical conductor uses, properties, and 2017 NEC requirements for Transformers installations. Topics will cover parallel conductors, conductor sizing and ratings and overcurrent protection sizing with some in class calculations. There will be discussion of transformer grounding/bonding based on the conductor sizing. This course will address differences between the NEC and the OESC when specific code references as part of the program.
Course content and time spent:
- Definitions & Guarding requirements
- Grounding & Bonding requirements
- Marking requirements & Accessibility requirements
- Overcurrent protection requirements & Installation requirements
- Calculating ampacity based on kVA ratings
- Tap rules and protecting conductors
Title of course: Transformers
This is a 4-hour or 8-hour power point presentation will be based on the 2017 NEC. Presentation will provide close examination of electrical conductor uses, overcurrent protection, properties, and requirements for transformers installations. Topics will cover parallel conductors, conductor sizing and ratings with overcurrent protection sizing with some in class calculations. Presentation will include grounding, bonding, disconnecting means, overcurrent protection and ampacity correction factors. There will be an in-depth discussion about main bonding jumpers, supply side bonding jumpers, grounding electrode conductors and bonding conductors with example calculations.
Course outcomes: To understand the effects of loads, environmental conditions, and temperature considerations for transformers. To discuss and clarify the intent of conductor grounding, bonding, overcurrent protection, other environmental special conditions that can affect transformer installation. Discussion for sizing of conductors for primary & second loading using NEC Articles 215, 220, 240, 250, 310, 450, and Chapter 9 Tables.
The presentation is intended for all licensed electricians, electrical Inspectors, and engineers.