Back of the book answers 
Questions 201-300
201
5 feet  513.10A
251
dusttight  500.2
202
125% of connected load  645.5A
252
600 volts  725.21B
203
#12 AWG  604.6
253
720
204
metallic connection  516.10B3
254
18 inches  501.15
205
F  553
255
8 inches  547.5
206
insulation  650.6D
256
21 feet  550.10D
207
all ungrounded conductors  590.4C
257
30 amps  600
208
voltage drop  647.4D
258
light blue  504.80C
209
voltage current phase  670.3D
259
not damage the cable  721.1
210
F  547.5A
260
Division 2  515.3
211
larger kW  555.12 note 1
261
from all other conductors  705.20
212
F  506.21
262
adjacent to  553.3
213
15  555.19A4
263
3 inches  810.54
214
2 feet  555
264
#10 AWG  545.4B
215
100%  660.6
265
holiday decorations  590
216
authority having jurisdiction  510.2
266
#8 AWG  540.13
217
not more than 5%  695.7
267
datum plane  555
218
90 days  590
268
75%  530.19A
219
general purpose  501.115B2
269
adjacent to but not in  553
220
circuit  600.5C3
270
accessible to vehicles  600.9A
221
at least 5  508D
271
and communication wires  800.53
222
12 feet  511.7B1b
272
flame retardant  620
223
dead front  665.21
273
grounded to a grounding electrode  250.30  702.10
224
30 amp  600.5B2
274
is subject to truck traffic  525.5A
225
Class 3 Division 2  500.5D2
275
T 650
226
in sight  600
276
GFCI protection  701.17
227
shall not  516.4D
277
fuel disconnect  525.21A
228
not more than 450mm  760.30A1
278
grounded  680.6
229
F  590.6A
279
a temporary dwelling  552
230
smoke producing characteristics  770.182A
280
#14 AWG  675.10
231
14 feet  600.9
281
F  553
232
handle  511.4B2
282
e terminal  505
233
30 amps  600.5b2
283
located outside the vault  530.51
234
12 feet  511.7B2
284
300mm  682.15
235
temporary lighting  590.4D
285
T 518.1  100
236
#26 AWG  650.6A
286
rigid metal conduit  501.130A3
237
125%  690.8A1
287
of the circuit  520.25B
238
reliable  695
288
DC  690
239
ungrounded  685.12
289
fuel  692
240
unintentional disconnection  625.9D
290
safe upper limit of travel  610
241
lighting  605
291
overcurrent device  630
242
.90  620.14table
292
15%  695.7
243
610.14A table
293
branch circuit  647.4D
244
common return  610.15
294
primary disconnecting means  692.54
245
stopping or retarding  620
295
flammable liquids  506
246
contact  530
296
junction  760.10
247
T  605.8D
297
.84  610.14E table
248
tidal fluctuation  682.2
298
theater  520.6
249
80% of ignition temperature of gas  501.130B1
299
250.30  692.41A
250
not damage cable  727.10
300
projection room  540.10