Electrical Installation Calculations: Basic, For Technical Certificate Level 2 8th Edition

Description

Designed to provide a step-by-step guide to successful application of the electrical installation calculations required in day-to-day electrical engineering practice, the Electrical Installation Calculations series has proved an invaluable reference for over forty years, for both apprentices and professional electrical installation engineers alike. Now in its eighth edition, Volume 1 has been fully updated in line with the 17th Edition IEE Wiring Regulations (BS 7671:2008) and references the material covered to the Wiring Regs throughout. The content meets the requirements of the 2330 Level 2 Certificate in Electrotechnical Technology from City & Guilds. Essential calculations which may not necessarily feature as part of the requirements of the syllabus are retained for reference by professional electrical installation engineers based in industry, or for those students wishing to progress to higher levels of study. The book's structure and new design make finding the required calculation easy. Key terms are explained in a glossary section and worked examples and exercises are included throughout the text to maximise accessibility of the material for the reader. A complete question and answer section is included at the back of the book to enable readers to check their understanding of the calculations presented. Also available: Electrical Installation Calculations Volume 2, 7th edn, by Watkins & Kitcher - the calculations required for advanced electrical installation work and Level 3 study and apprenticeships.

CONTENTS:

Use of calculators. Simple transposition of formule. SI units. Conductor colour identification. Areas, perimeters and volumes. Space factors. Coulombs and current flow. Circuit calculations: Ohm's law. Resistors in series. Resistors in parallel. Series and parallel resistors. Internal resistance. Resistivity. Voltage drop: Conductor resistance and voltage drop. Voltage drop using BS 7671. Power in DC and purely resistive AC circuits. Mechanics: Moment of force. Force ratio. Mass, force and weight. Work. The inclined plane. The screwjack. The wheel and axle principle. The block and tackle. Power. Efficiency. Powerfactor: kW, kVa and kVar. Transformers: Calculations. Transformer current. Electromagnetic effect: Magnetic flux and flux density. Force on a conductor within a magnetic field. Self-inductance. Mutual inductance. Cable selection: Heat in cables. Disconnection times for fuses. Disconnection times for circuit breakers. Fusing factors, overload and fault current. Short circuit current. Earth fault loop impedance: Earth fault loop impedance, Ze. Earth fault loop impedance, Zs. Material costs, discounts and VAT. Electrostatics: The parallel plate capacitor. Series arrangement of capacitors. Parallel arrangement of capacitors. Formule: Work. Capacitance. Three-phase calculations. Electronic symbols. Glossary. Answers