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Electrical contracting /
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 empl...
| Clasificación: | Libro Electrónico |
|---|---|
| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
London :
Butterworths,
1984.
|
| Edición: | Second edition. |
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Electrical Contracting; Copyright Page; Preface; Table of Contents; Chapter 1. Modern wiring systems; Temperature considerations; Mechanical damage; Conduit system; Metallic conduit; Metallic trunking systems; Plastics trunking; Other trunking systems and ancillaries; PVC-insulated and sheathed cables; Mineral-insulated cables; Other cables; Chapter 2. Fundamental electrical installation design; Present-day aspects; Preliminaries; Network earthing; Choice of wiring; Distribution; Disconnection times; Final circuits; Relation between protective devices and cables.
- Short circuit considerationsOther constraints; Electric shock protection; Residual current devices; k Values; Alternative considerations; Design example; Chapter 3. Estimating; Materials; Labour; Scaffold; Drawing office costs; Other costs; Overheads; Fixed price allowance; Summary; Profit; On cost calculation for labour; Estimating with the aid of a computer; Chapter 4. Electronic motor control; Static frequency converter types; The comparator; The six pulse PAM converter; PAM control circuits; Application of static frequency converters; Special motor designs.
- Chapter 5. Lighting
- technological development simplifies the lighting choicesLamp development; Discharge lamps; Compact fluorescent lamps; Luminaire development; Control systems; Computer-based systems; Chapter 6. Electricity tariffs; Consumer classes and tariff groups; Energy management; Choice of tariff; Other commercial matters; The meter; Domestic metered tariffs; Industrial demand tariffs; Overview; 2-Step block tariff example; Chapter 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 RegulationsContents; Protection for safety; Worked examples; Isolation and switching; Symbols; International protection (IP) enclosures; Bathroom safety; Trunking; Chapter 8. Inspection and testing; Visual inspection; Checking the design; Compliance with British Standards; Physical checklist; Trunking checklist; Hazardous areas; Mobile caravan sites (471-42-46); Testing sequence; Continuity of ring circuit conductors (App. 15, item 2); Continuity of protective conductors (613-3); Earth electrodes; Insulation resistance; Electrical separation (613-11).
- Reduced voltage systemsInsulation of non-conducting floors and walls; Polarity; Earth fault loop impedance; Determination of ZE (App. 15, item 5); Example; Determination of Zs; Operation of rccbs and fvcbs; Fault voltage devices (fvcbs) (613-16); Alterations to an installation (621-1); Periodic inspection and testing (631-1); Certification; Periods betwen tests (App. 16); Chapter 9. The work of the Joint Industrial Council for Electrical Installation Contracting (JIB); Organization; Dispute procedures; Membership and welfare benefits; Wages and Conditions; Grading and training; Productivity.