Basic Electrical Installation Work

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Strana 398 z 399

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motor 210 Sinusoidal waveform 94 Site plan 65 Site safety 274 Skilled person 53 Slips, trips and falls 145 Socket outlet circuits 290 Sockets 294 Space heating circuits 295 .c.I. Units 80 Safe condition signs 23 Safe electrical systems 130 Safe manual handling 165 Safe working above ground 167 Safety documentation 264 Safety signs 12, 22 Scaffold towers 168 Schedule 182 Schematic diagrams 68 Secondary cells 342 Secure supplies 330 Secure/safe electrical isolation 27,169 Security lighting 335 Segregation circuits 314 Self inductance 205 SELV transformer 215 Series connected resistors 104 Series motor 207 Shaded pole motor 212 Short circuit currents 135 Short circuit protection 240 Single phase a.Index 387 M cable 126 M cables 126, 317 Machines 90 Magnetic fields 113 Magnetic hysteresis 206 Magnetism 112 Management Health and Safety at Work Regulations 9 Mandatory signs 23 Manual handling 145, 165 Martindale voltage indicator 28 Mass 85 MCB’s (miniature circuit breakers) 135, 241 Measuring volts and amps 110 Mechanics and machines 84 MICEIC (National Inspection Council) 56 Mobile scaffold towers 168 Multimeters 111 Mutual inductance 205 National Grid 117, 223 New wiring colours 124 Non-statutory Regulations 14 Normally closed circuits 332 Normally open circuits 332 Off-peak heating 295 Ohm’s Law 82 On Site Guide (to the IEE Regulations) 16 On-site documentation 184 Optical fibre cables 331 Ordinary person 53 Overcurrent protection against 135, 239, 244 Overload currents 135, 239 Parallel connected resistors 104 Part Regulations 287 Passive infra-red detectors 335 PAT testing 144 Personal communications 189 Personal hygiene 146 Personal image 189 Phase angle 198 Phasor diagram 197 PIR detectors 335, 337 Plastic plugs 323 PME supplies 281 Polarity testing 356, 358 Positional reference system 71 Potential Difference (PD) 82 Power 88, 201 Power circuits 290 Power factor 201 Power factor correction 203 Power tools 144 PPE Regulations 12 Pressure stress 87 Primary cells 342 Prohibition signs 22 Properties (of conductors and insulators) 100 Protecting circuits and people 234 Protection against overcurrent 135 Protection from electric shock 132 Protective equipotential bonding 133, 235, 347 Proximity switches 337 PVC cables 125 PVC/SWA cable 126, 316 Radial circuits 290 Rawlbolt 323 RCD protection 237, 252 RCD testing 359 Reactance 195 Reasonably practicable duty care 265 Relay 216 Resistance 82, 84, 195 Resistivity 83 Resistors series/parallel 103 Ring circuits 290 Risk assessment 10, 155 rms value 95 Roles and responsibilities workers 45 S