itance,
and resistance in, 172175
transformers in, 142148, 151
AC generator, 129
AC-operated relays, 344345
AC resistance, 150
AC voltage. See alternating current
active electrical network, 417
active network, 429
access fitting, 417
accidental ground, 425
adapter
conduit, 297
for grounding, 356
adjustable core coils, 153
admittance, 417
aiding magnetic fields, 910
air, conduction of electricity by,
4550
air circuit breaker, 386, 387, 417
air conditioning, planning
circuitry for, 311
air core, 16, 154
air switch, 417
air-blast transformer, 417
alarm devices, 359365
annunciator systems, 360, 362
closed-circuit systems, 360, 361
controls, 363
infrared light beam systems, 359
keypad, 364
open-circuit systems, 360
photoelectric bell control units,
359, 360, 378
power supplies, 364
sensors, 360
signaling devices, 363
wireless systems, 365
alarms
annunciator wiring systems,
360, 362
automatic night-lights, 360
backup battery, 364
bells and chimes, 376378
burglar alarm system, sample
schematic for, 361
central control panel, 363
closed-circuit systems, 360, 361
controls, 363
devices, 359365, 378
false, automatic handling of, 363
fire, 360
infrared light beam devices, 359
installation, 359
keypad control of, 363364
new systems, advantages of, 363
open-circuit systems, 360
photoelectric bell control units,
359, 360, 378
power failure, 365
power supply, 364
sensors, 360
signaling devices, 363
smoke alarms, 360
time delay, 363
wireless systems, 365
alive, defined, 417
alloys, 5, 33
Alnico alloy, 5, 9, 33
alternating current (AC), 129151
circuits. See AC circuits
core loss, 148
core lamination, 148150
439
COPYRIGHTED MATERIAL P1: KTX
GB034-IND
GB034-Rosenberg-Sample
May 3, 2004
16:44
Char Count= 0
440
Index
alternating current (AC)
(continued )
defined, 129, 417
and direct current compared, 132
frequency of, 129, 151
instantaneous and effective
voltages, 129132
Ohms law and, 133136
resistance, DC vs. AC, 150
resistive AC currents, power
laws in, 136137
sine curve during cycle,
illustration of, 130
three-phase system, 434
transformer action in AC
circuits, 142148
voltages, combining 137142
voltmeter, 129, 131132
alternator, 129, 417
aluminum wire, 4344
ambient temperature, defined, 417
American Standards Association,
39
American Wire Gauge, 3943
ammeter
connecting, 6162, 86
defined, 417
troubleshooting with, 33
use of, 17, 19, 94
ampere, 17, 423
defined, 417
ampere-turns, 1920
angle
measurement of, 214
phase, 139, 398, 399, 431
sines and tangents of, 215216
angle connectors, 297
angstroms, 185
annunciator, defined, 417
annunciator wiring alarm systems,
360, 362
apparent power, 159, 162, 417
appliance(s)
average power consumed by, 252
defined, 417
fixed, 311
portable, 311
appliance circuits
branch, 419
high-wattage, individual, 246
National Electric Code for,
246
planning for, 311
regular, 246
applied voltage, 121, 182
aqueous solution, 50
arc lamps, 188
arc-fault circuit interrupter
(AFCI), 331332
defined, 417
arcing contacts, 418
arcing time of fuse, 418
arc-over of insulator, 418
arcs, 4748
argon gas, 205
armature, 125
armor clamp, 418
armored cable, 235
advantages, 279, 297
bending, 284, 287
and conduit compared,
279, 297
connecting to junction box,
281282, 285286
cutting, 279280
defined, 418
fishing in old houses, 282
installing 280284
and nonmetallic sheathed cable
compared, 279
preinstallation examination, 280
protective bushing, 280, 283,
284
removing the metal casing,
281282
restrictions on, 297
for service entrances, 279280
uses of, 279
arrester, lightning, 119, 418
artificial light, 185
atom, 11
attic, lighting for, 324
attractive force, 4
automatic station, 381, 434 P1: KTX
GB034-IND
GB034-Rosenberg-Sample
May 3, 2004
16:44
Char Count= 0
Index 441
automatic substation, 381,
407410, 413
interlocks and, 409
operation of, 408
plans for, 409
starting and stopping, 408409
automobile ignition system,
diagram of, 117
autotransformer, 418
B
back-connected switch, 418
back emf, 121
back-wire outlet receptacles, 271
balanced lines, 371
ballast, 197, 331
bank
defined, 418
duct, 418
bar magnets, 5, 9
baseboard heater, 337338, 339,
356
base load, defined, 402403
base load plant, 402
basement, lighting for, 324326,
335
basic house wiring. See house
wiring
bathroom, lighting for, 323324,
335
battery
backup, alarms, 364
defined, 25
polarization, 431
primary, 66, 431
resistance of, 6365, 86
secondary, 66, 433
storage, 66, 68
testers, 6364, 65
bayonet candelabra lamp bases,
191
bayonet lamp bases, 191
bedroom
circuit breakers required for, 332
lighting for, 320323, 335
bells and chimes, 376378
in hospitals, 377
installation of, 377
outdoor installations, 378
photoelectric control of, 360,
378
tone signal system, 376377
wiring of, 376
benchboard, 418
B-H curve, 2325
bidirectional current, 418
bimetallic thermostat, 341, 356
bipost lamp bases, 191
black insulated wire, 286, 307
blower installation, kitchens, 319
bond, cable, 418
box(es)
ceiling, 274
conduit, 284, 418
connecting cable to, 262263
exact location of, 258
junction, 281282, 285286,
418419, 427
maximum number of conductors
per, 255
mounting. See box mounting
pull, 284, 419, 431
transfer, 435, See also pull box
box mounting
metal plates, 261
old work, 256258
running boards, 261262
running sheathed cable, 259260
special devices for, 258259
step-by-step instructions for, 259
branch circuit, 69, 7071
appliance, 419
defined, 69, 86, 419
lighting, 419
branch circuit distribution center,
419
branch conductor, 419
break, defined, 419
breakdown, 419
breaker, line, 419
brightness, units of, 225
brushes, 125
building feeder, 229
built-in lighting, 311, 313 P1: KTX
GB034-IND
GB034-Rosenberg-Sample
May 3, 2004
16:44
Char Count= 0
442
Index
bulbs, lamp
blackening of, 188189, 190,
210
light-center length, 193
light diffusion, 193
three-way, 316
types of, 193194
buried cable, 419
burglar alarm system, sample
schematic for, 361
bus, defined, 419
bushing(s)
defined, 419
insulated, 419
for protecting cable, 280, 283,
284
purpose of, 237, 240
C
cabinet, 419
cable(s)
armored, 235, 279284
bond, 418
buried, 419
bushings for protecting, 280,
283, 284
coaxial, 371
connecting to boxes, 262263
defined, 419
fault, 420
fishing, in old work, 263268
heating, 354, 356
for intercom installation,
369370, 371
joint, 420
lay, 428
nonmetallic sheathed, 55, 235,
259260
plastic-insulated sheathed, 55
raceway, 432
cable rack, 432
service, 420
serving of, 433
sheath, 420, 433
twin, 436
twisted pairs, 371
type AC, 235, 265, 279, 280
type ACT, 279
type ASE, 279
type ACV, 279
type BX, 235
type NM, 235, 259260, 262,
265
type UF, 262, 419
type USE, 279
underground, 279280, 436
candelabra lamp bases, 191
candle per square inch, 225
candlepower, 30, 213
candlepower distribution curve,
213
capacitance, 164, 182
capacitive reactance, 182
in AC circuits, 163166
and resistance in series,
166171
capacitors, 116, 164, 182
Ohms law for, 166
Static, 169, 170
types of, 169
capacity, 68, 164
carbon arcs, 48
ceiling box, 274
ceiling cable heating unit, 339
cell(s)
dry, 12, 25, 64, 65, 66
parallel connection of, 8486
series-parallel connection of,
9293
standard, 434
central control panel, alarm
systems, 363
charge, electric, 116, 420
charge flow, 1819
charge separator, 12
choke coil, 119122, 420
circuit(s), 12
AC, 133136, 153182
appliance, 246
arc-fault interrupter, 331332
branch, 69, 7071, 86, 419
with capacitance and resistance
connected in parallel,
177179 P1: KTX
GB034-IND
GB034-Rosenberg-Sample
May 3, 2004
16:44
Char Count= 0
Index 443
with capacitive reactance and
resistance connected in
series, 166171
closed, 25
closed electric, 420
contacts, 421
earth (ground) return, 420
electric, 420
equivalent, 60
general-purpose, residential,
246, 250
ground, 45, 47, 352354, 420
ground-fault interrupter, 331,
425
improving, 251
with inductance and resistance
connected in parallel,
175177
with inductance, capacitance,
and resistance connected in
parallel, 179182
with inductance, capacitance,
and resistance connected in
series, 172175
leg of, 428
magnetic, 2025, 420
open, 2728
open-wire, 430
outdoor, 425
parallel, 6973, 8687
parallel-resonant, 179
power-factor correction,
180181
probable consumption on,
calculating, 251
reduction, 9498
resistive and inductive
compared, 154
series, 59, 6062, 69, 166175,
433
series-opposition voltages, 6669
series-parallel, 89106
series-resonant, 175, 183
short, 433
circuit breaker(s)
air, 386, 387, 417
for bedroom, 332
defined, 385
electric water heaters, 350351
generating station, 385386
mounting, 429
quick-break, 432
quick-make, 432
tripping, reason for, 331
vacuum, 386, 389
circuit reductance
by conductances, 98
by pairs, 97
by product-and-sum formula, 97
by reciprocals, 9798
circuit reduction, 9498
circuiting, 244246. See also home
circuiting
for air conditioning, 311
appliances, planning for, 311
for electric heaters, 341344
example of typical circuitry for
farm home with
outbuildings, 333334
functional planning, 310, 332
lamp control from electrolier
switch, 303, 305307
possible circuit arrangements,
301303
preplanning, importance of, 301,
332
safety considerations, 310, 332
symbols used to denote, 247250
wiring plan for t