Dictionary of electrical installation work: illustrated dictionary: a practical A-Z guide

Title Page
......Page 2
Copyright
......Page 3
Introduction......Page 4
a.c. (alternating current)......Page 6
Additions and alterations......Page 7
Alterations (see Additions and alterations)......Page 8
Automatic disconnection of supply (ADS)......Page 9
Autotransformer......Page 10
Back-up protection......Page 11
Bathrooms......Page 12
BEAB......Page 14
Bus-bar......Page 15
Ca, Cg, Cf, etc (see Rating factors)......Page 16
Caravans......Page 17
CENELEC......Page 18
Circuit breakers (see also RCBOs)......Page 19
Circuit protective conductor (cpc)......Page 20
Concentric cable......Page 21
Conduit......Page 22
Construction Skills Certification Scheme (CSCS)......Page 23
CSCS (See Construction Skills Certification Scheme)......Page 24
Design current (Ib)......Page 25
Diagrams......Page 26
Direct contact (see Basic protection)......Page 28
Disconnection times (see Automatic disconnection of supply)......Page 29
Diversity......Page 30
Duty–holder......Page 31
Earth electrode resistance......Page 32
Earth fault loop impedance Zs (see also Earthing systems and Testing)......Page 34
Earthing systems......Page 35
ECS card (see Construction Skills Certification Scheme)......Page 37
Electrical installation certificate EIC (see Certification)......Page 38
Electron......Page 39
Exhibitions, shows and stands......Page 40
Extraneous conductive part......Page 41
Faraday cage (see Equipotential bonding)......Page 43
First fix......Page 44
Fuses......Page 45
Fusing factor......Page 46
GLS lamps......Page 47
Guidance note (GS 38)......Page 48
High protective conductor currents (see Protective conductor currents)......Page 49
IEC (International Electrotechnical Commission) This is an organization that publishes and assesses conformity to standards.........Page 51
Joule symbol J......Page 58
k values for conductors......Page 59
Loop impedance (see Earth fault loop impedance)......Page 60
Lux lx or lumens/m2......Page 61
Marinas......Page 62
Mobile and transportable units......Page 63
Modular wiring system......Page 64
Mutual detrimental influence......Page 65
Neutral conductor (see also Harmonics)......Page 66
Nuisance tripping......Page 68
Operating or maintenance gangways......Page 70
Overvoltage......Page 71
Parallel paths......Page 72
Phase......Page 73
Power P (watts)......Page 74
Power factor (p.f.)......Page 75
Power factor correction......Page 76
Protective conductor current......Page 77
PV supply systems......Page 78
Rating factor C......Page 79
Reinforced insulation......Page 80
Residual current device (RCD) (see also Additional protection and Nuisance tripping)......Page 81
Residual current monitors (RCMs)......Page 82
Resistance R ohms......Page 83
Risk assessment......Page 84
Saunas......Page 85
Schedule of test results......Page 86
Simultaneously accessible parts......Page 87
Soil resistivity......Page 88
Split-load distribution board......Page 89
Starter (fluorescent)......Page 90
Starting current......Page 91
Supplementary equipotential bonding......Page 92
Switched-mode power supply (SMPS)......Page 93
System......Page 94
Temperature coefficient a (units: Ω/Ω/°C)......Page 95
Testing......Page 96
Continuity of ring final circuit conductors......Page 97
Thermal insulation......Page 100
TN, TN-C-S and TN-S systems (see Earthing systems)......Page 103
Transportable units (see Mobile and transportable units)......Page 104
Undervoltage......Page 105
UPS (uninterruptible power supply)......Page 106
Voltage drop......Page 107
Voltage optimization......Page 108
Wiring diagrams (see Diagrams)......Page 109
Appendix
......Page 112
General Formulae and Information......Page 120
TRIGONOME T RICAL RATIOS......Page 124
Basic electrical formulae......Page 125
Electrical Machines......Page 130
A.C. CIRCUITS......Page 132
Power......Page 134
Transformers......Page 135
Cells and Batteries......Page 136
Illumination......Page 137