Transcription of Appendix 9C: Design Calculations for Electrical ... - Seattle
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Appendix 9C: Design Calculations for Electrical ... - Seattle
Chapter 9 Electrical Design SPU Design Standards and Guidelines November 2020 i Appendix 9C Design Calculations for Electrical Design Chapter 9 Electrical Design Appendix 9C Design Calculations for Electrical Design ii SPU Design Standards and Guidelines November 2020 Contents 1. Introduction .. 1 2. Software .. 1 3. Calculation Matrix .. 2 4. Basic Requirements for Electrical Calculations .. 4 5. Basic Electrical Engineering Formulas .. 4 List of Symbols .. 4 Direct Current (DC) Formulas .. 5 Alternating Current (AC) Single Phase .. 5 Alternating Current (AC), Three-Phase .. 5 Motors .. 6 Power Factor Correction .. 7 6. Sample Calculations .. 7 Load .. 7 Generator Sizing .. 7 Sizing Procedures for Generator Single or Multi-sets .. 8 Definitions: Generator Sizing .. 8 Underlying Equations .. 8 Conductor Size, General .. 10 Conduit Size and Fill .. 13 Motor Branch circuit .. 14 Power Factor Correction Capacitors.
Circuit breaker and fuse sizing To size circuit breakers and fuses per NEC Tables, hand calcs X X 60 and 90 Conduit Fill/Tray Size To size conduit and cable tray per NEC NEC Tables, Cablematic Plus X X 60 and 90 Voltage drop For heavily loaded and/or long circuits to confirm operation within NEC recommendations (min) SKM PTW DAPPER,
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