COVID-19 Update: We are currently shipping orders daily. However, due to transit disruptions in some geographies, deliveries may be delayed. To provide all customers with timely access to content, we are offering 50% off Science and Technology Print & eBook bundle options. Terms & conditions.
Electrical Contracting - 2nd Edition - ISBN: 9780408013710, 9781483140698

Electrical Contracting

2nd Edition

Editor: Michael Neidle
eBook ISBN: 9781483140698
Imprint: Butterworth-Heinemann
Published Date: 19th September 1984
Page Count: 200
Sales tax will be calculated at check-out Price includes VAT/GST
Price includes VAT/GST

Institutional Subscription

Secure Checkout

Personal information is secured with SSL technology.

Free Shipping

Free global shipping
No minimum order.


Electrical Contracting, Second Edition is a nine-chapter text guide for the greater efficiency in planning and completing installations for the design, installation and control of electrical contracts. This book starts with a general overview of the efficient cabling and techniques that must be employed for safe wiring design, as well as the cost estimation of the complete electrical contract. The subsequent chapters are devoted to other electrical contracting requirements, including electronic motor control, lighting, and electricity tariffs. A chapter focuses on the IEE Wiring Regulations and Statutory Regulations to ensure compliance to the fundamental requirements for safety. The discussion then shifts to visual inspection and testing in accordance with the IEE Wiring Regulations. The last chapter describes the special role of the Joint Industrial Council for Electrical Installation Contracting in introducing a rational and equitable incomes policy into the industry. This text includes many worked examples and illustrations to demonstrate how the technical and commercial aspects are put into practice.

Table of Contents

1. Modern Wiring Systems

Temperature Considerations

Mechanical Damage

Corrosion, etc

Conduit Systems

Metallic Conduit

Plastics Conduit

Safety Extra-Low Voltage Circuits

Metallic Trunking Systems

Plastics Trunking

Other Trunking Systems and Ancillaries

PVC-Insulated and Sheathed Cables

Mineral-Insulated Cables

Other Cables

2. Fundamental Electrical Installation Design

Present-Day Aspects


Network Earthing

Choice of Wiring


Implications of IEE Regulations, Part 3

Disconnection Times

Final Circuits

Relation between Protective Devices and Conductors

Short Circuit Considerations

Other Constraints

Electric Shock Protection

Residual Current Devices

k Values

Alternative Considerations

Design Example

Earth Fault Loop Impedance


Main Equipotential Bonds

3. Estimating

Estimating Forms




Engineering Costs

Drawing Office Costs

Other Costs


Fixed Price Allowance


Daily Progress Form

On-Cost Calculation for Labor

Inquiry Detail

Estimating Form

Summary of Estimate

Materials Increased Costs

NEDO Indices

Estimating with the Aid of a Computer


Standard Product

4. Electronic Motor Control

Static Frequency Converter Types

Pulse Width Modulation

Reference Sine-Wave Generator

Triangular Waveform Generator

The Comparator

Six Pulse PAM Converter

PAM Control Circuits

Application of Static Frequency Converters

Harmonic Currents

Methods of Starting

Automatic Control Systems

Protection Circuits

Motor Reversing

Special Motor Designs

5. Lighting-Technological Development Simplifies the Lighting Choices

Lamp Development

Tungsten Filament Lamps

Tungsten Halogen Lamps

Fluorescent Lamps

High Frequency Lamps

Discharge Lamps

Compact Fluorescent Lamps

Luminaire Development

Control Systems

Constant Illumination

Variable Illumination

Energy Management

Dimming Systems

High Frequency Regulations

Computer-Based Systems

New Fluorescent Lamps for Old

6. Electricity Tariffs

Consumer Classes and Tariff Groups

Energy Management

Choice of Tariff

Other Commercial Matters

The Meter

Domestic Metered Tariffs

Domestic Two-Part Tariff

Domestic Block Tariff

Domestic Block Tariff (3-Step)

Industrial Demand Tariffs

Industrial Maximum Demand Tariff


2-Step Block Tariff Example

7. A Review of Wiring Regulations

The IEE Wiring Regulations and Statutory Regulations

The IEE Wiring Regulations and International Wiring Rules

Scope of the IEE Wiring Regulations


Protection for Safety

Protection against Electric Shock

Application against Indirect Contact

Extra-Low Voltage Safety

Earthed Equipotential Bonding

Adiabatic Equation

Worked Examples

Protection against Thermal Effects and Overcurrents

Isolation and Switching


International Protection (IP) Enclosures

Bathroom Safety


Eddy Currents and other Precautions

8. Inspection and Testing

Visual Inspection

Checking the Design

Compliance with British Standards

Physical Checklist

Trunking Checklist

Hazardous Areas

Mobile Caravan Sites

Testing Sequence

Continuity of Ring Circuit Conductors

Continuity of Protective Conductors

Earth Electrodes

Insulation Resistance

Insulation Resistance to Earth

Insulation Resistance between Live Conductors

Insulation of Site-Built Assemblies

Insulation against Indirect Contact

Electrical Separation

Reduced Voltage Systems

Insulation of Non-Conducting Floors and Walls


Earth Fault Loop Impedance

Determination of ZE

Determination of Zs

Tables of Zs at Various Test Temperatures

Operation of Residual Current and Fault Voltage Devices

Fault Voltage Devices

Alterations to an Installation

Periodic Inspection and Testing


Periods between Tests

9. The Work of the Joint Industrial Council (JIB) for Electrical Installation Contracting


Dispute Procedures

Membership and Welfare Benefits

Wages and Conditions

Grading and Training






No. of pages:
© Butterworth-Heinemann 1988
19th September 1984
eBook ISBN:

About the Editor

Michael Neidle

Ratings and Reviews