- 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.
- ANSI/IEEE Standard Device Numbers Device numbers are specified in ANSI/IEEE Standard C37.2 and are used to identify the functions of a device shown on a schematic diagram.
- Electrical One-Line Diagram Symbols One-line diagrams are an important means of communicating the components, relationships, and connections within a circuit or electrical system.
- Power Distribution System Arrangements Several commonly-used distribution system topologies are presented here, along with the pros and cons of each including: radial, radial with primary selectivity, expanded radial, loop, secondary-selective, primary-selective, secondary spot-network, ring bus, and composite.
- Manufacturers' product data - Select and apply the data found in manufacturers' published data to testing, troubleshooting, maintenance, and/or repair. Interpret time-current curves.
- Circuit Breaker Characteristic Trip Curves and Coordination Circuit breaker operating characteristics are graphically presented on time/current characteristic curves commonly called trip curves. To determine if proper coordination exists between molded case circuit breakers, a comparison of circuit breaker characteristic trip curves is necessar
- Selective Coordination of Protective Devices Time curve coordination of protective devices like fuses and circuit breakers.
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