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- Electrical drawings and symbols - Read and interpret ac and dc schematic diagrams, ac three-line diagrams, connection and interconnection drawings, electrical symbols, and ANSI device numbers.
- Manufacturers' product data - Select and apply the data found in manufacturers' published data to testing, troubleshooting, maintenance, and/or repair. Interpret time-current curves.
- Characteristics of Circuit Breaker Trip Curves and Coordination Time-current curves are used to show the amount of time required for a circuit breaker to trip at a given overcurrent level.
- Time-Current Curves explained in detail Time-current curves are used to show how fast a breaker will trip at any magnitude of current.
- Understanding Time Current Curves A time current curve (TCC) plots the interrupting time of an overcurrent device based on a given current level. These curves are provided by the manufacturers of electrical overcurrent interrupting devices such as fuses and circuit breakers.
- Selective Coordination of Protective Devices Time curve coordination of protective devices like fuses and circuit breakers.
�Getting Started