Now in its 10th edition, Electrical Installation Calculations: Basic has been updated to include any changes required to bring it in line with the 18th edition of the IET electrical wiring regulations (BS7671:2018). Electrical calculations required for exams can prove difficult to master, but for more than 40 years, this book series has proved very helpful to students and professional electrical engineers studying for electrical qualifications. It covers all the calculations required for Level 2 electrical qualifications, along with other useful calculations that may be used in the electrical industry but may not feature in the syllabus of some exams. Although the calculations in this book are referred to as 'basic', they form the foundation of all calculations carried out in the electrical industry, which have been set out simply with worked examples along with additional questions and answers. Key terms are explained in a glossary that which can be used to assist with the readers understanding. Cover Half Title Title Page Copyright Page Table of Contents Preface 1 Use of Calculators 2 Simple Transposition of Formulae 3 SI Units SI Derived Units (Used in Book 1 & 2) SI Unit Prefixes 4 Conductor Colour Identification 5 Circuit Calculations Ohm’s Law Resistors in Series Resistors in Parallel Calculation of Total Resistance of Resistors in Parallel Resistances in Parallel Using Product over Sum Method Series and Parallel Resistors 6 Voltage Drop Conductor Resistance and Voltage Drop Using Ohm’s Law Voltage Drop Using Tables From BS 7671 7 Areas, Perimeters and Volume Calculation of Perimeters Areas and Perimeters Volumes 8 Space Factors Calculation 9 Coulombs and Current Flow 10 Internal Resistance Resistivity 11 Power in a d.c. and Purely Resistive a.c. Circuit Method 1 Method 2 Method 3 Mechanics Mass, Force and Weight Efficiency 12 Power Factor kVA, kVAr and kW 13 Transformers Transformer Calculations Transformer Current 14 Electromagnetic Effect Magnetic Flux and Flux Density Force on a Current Carrying Conductor Within a Magnetic Field 15 Induced e.m.f. 16 Self-Inductance 17 Mutual Inductance 18 Cable Selection Disconnection Times for Fuses Disconnection Times for Circuit Breakers Fusing Factors, Fault Current and Overload Short Circuit Current 19 Earth Fault Loop Impedance Earth Fault Loop Impedance Z[sub(e)] Earth Fault Loop Impedance Z[sub(s)] 20 Material Costs, Discounts and Value Added Tax 21 Electrostatics The Parallel Plate Capacitor Series Arrangement of Capacitors Parallel Arrangement of Capacitors 22 Formulae 23 Electronic Symbols 24 Glossary 25 Answers to Exercises Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5 Exercise 6 Exercise 7 Exercise 8 Exercise 9 Exercise 10 Exercise 11 Exercise 12 Exercise 13 Exercise 14 Exercise 15 26 Additional Questions and Answers Answers "In line with the 18th Edition of the Wiring Regulations, it now gives a worked example of resistivity and more on disconnection times for fuses and circuit breakers. For foundation level electrical installation courses, and essential calculations for professionals, with a glossary section, worked examples and questions and answers"-- Provided by publisher
