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Electrical installation calculations : for Technical Certificate Level 2, Basic. Preview this item
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Electrical installation calculations : for Technical Certificate Level 2, Basic.

Author: A J Watkins; Chris Kitcher
Publisher: Oxford : Newnes, 2009.
Edition/Format:   Print book : English : 8th ed.View all editions and formats

A guide to successful application of the electrical installation calculations required in day-to-day electrical engineering practice. It meets the requirements of the 2330 Level 2 Certificate in  Read more...


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Genre/Form: Problems and exercises
Problems, exercises, etc
Document Type: Book
All Authors / Contributors: A J Watkins; Chris Kitcher
ISBN: 9781856176651 1856176657
OCLC Number: 302078386
Description: pages cm
Contents: Use of calculators. Simple transposition of formulae. 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. Formulae: Work. Capacitance. Three-phase calculations. Electronic symbols. Glossary. Answers


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"A very useful study aid, the book is ideal for those who have become a little rusty with their calculations and need to remind themselves of the basics." customer review

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