ETT Study Guide Book 3: Component Testing
Z. Fuses
1. Properties and Types
Identify properties, types, and applications 2, 3, 4
- UL 248-12 Low Voltage Fuses Class R 2
- Specifying the Right Fuse for Circuit Protection 3
- Selecting Protective Devices EATON Handbook
- Medium Voltage Fuses
- How a Fuse Operates
- Fuse Application Guide
- Rating Definitions Applied to Medium Voltage Fuses
- Fuses: Principles of design and operation
2. Inspection and Test Procedures
Apply visual and mechanical inspections 2, 3, 4
- NFPA 70 2017: National Electrical Code 2 3 4
- Article 230: Services
- Article 240: Overcurrent Protection - IEEE C37.46 Standard Specifications for High-Voltage (>1000 V) Expulsion and Current-Limiting Power Class Fuses and Fuse Disconnecting Switches 4
- Selection Guide For Transformer Primary Fuses in Medium- and High-Voltage Utility and Industrial Substations 4
- IEEE C37.40 Standard Service Conditions and Definitions for High-Voltage Fuses, Distribution Enclosed Single-Pole Air Switches, Fuse Disconnecting Switches, and Accessories 4
- 10 Important Definitions Applied To Low Voltage Fuses
- Maintenance Procedures for Fuses 1
- Maintenance Procedures for Fuses 2
- Code Changes Based on 2020 NEC
Employ methods and procedures for electrical tests 2, 3, 4
- NFPA 70B: Chapter 11.18 Fuses 2 3 4
- ETT II: Resistance Testing Review
3. Interpretation of Test Results
Evaluate results of electrical tests 2, 3, 4
- NETA-ATS 2017: Section 7 2 3 4
- NETA-MTS 2019: Section 7 2 3 4
Last Update: Aug 21, 2023
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Guide Table of Contents, Book 3
- Book 3 Overview
- A. Switchgear and Switchboard Assemblies
- B. Transformers
- C. Cables
- D. Metal-Enclosed Busways
- E. Switches
- F. Circuit Breakers
- G. Circuit Switchers
- H. Network Protectors
- I. Protective Relays
- J. Instrument Transformers
- K. Metering Devices
- L. Regulating Apparatus
- M. Grounding Systems
- N. Ground-Fault Protection Systems
- O. Rotating Machinery
- P. Motor Control Centers and Motor Starters
- Q. Adjustable-Speed Drive Systems
- R. Direct-Current Systems
- S. Surge Arresters
- T. Capacitors and Reactors
- U. Outdoor Bus Structures
- V. Emergency Systems
- W. Automatic Circuit Reclosers and Line Sectionalizers
- X. Fiber-Optic Cables
- Y. Insulating Liquids and Gases
- Z. Fuses
- AA. Electric Vehicle Charging Systems