ALTERNATING GENERATORS AND SYNCHRONOUS MOTORS. 
At normal load the armature current is 92’ amps.; therefore, 
the copper loss will amount to 92? X 0.48 = 4.060 watts 
which is practically the value 4,050 as found above. 
FABLE 12.—DATA OF BARE AND DOUBLE COTTON COVERED 
WIRE, GRITISH S.W.G. 
0 1 2 3 4 5 6 
Number] Diam. — : Max. | Number 
= a i mechan. poe Sie mr Ft. Come Ft. a vee of wg beh 
ritis are re Wire. 0.0. | perInc 
S.W.G. Wire. Inches. Fahrenheit, Wire. 0.0. 
00 .348 095115 . 36636 .00008421 .363 2.7 
0 .324 .082448 J31757 .00009715 .339 29 
1 .300 .070686 27227 .00011331 315 3.2 
2 rte * 059828 .23044 -00013387 .291 3.4 
3 . 252 .049876 .19211 -00016059 . 267 3.7 
4 232 .042273 . 16283 .00018947 .247 4.0 
5 -212 .035299 13596 .00022691 2278 4.4 
6 .192 .028953 .11520 . 00027664 .207 4.8 
Ye .176 024329 .09371 - 00032922 .191 5.2 
8 .160 .020106 077445 -00039836 175 5.7 
9 .144 .016286 .062730 .00049181 159 6.3 
10 p .128 .012868 049565 - 00062243 .143 7.0 
11 .116 .010568 .040707 .00075787 .131 7.6 
12 .104 .008495 .032'720 - 00094286 .119 8.4 
13 .092 .006648 .025605 .0012048 _107 9.3 
14 .080 005026 .019361 .0015934 095 10.5 
15 .072 -004071 .015683 .0019672 .082 12.2 
16 . 064 003217 .012391 .0024897 074 13.5 
17 .056 .002463 .0094869 -0032519 .066 15,1 
18 .048 .001809 .0069700 0044262 .058 17.3 
19 .040 .0012567 .0048403 .0063737 -050 20.0 
20 .036 -O9101L79 .C039206 .0078689 .046 21.7 
21 032 - 0008042 .0030978 .0099590 .042 23.8 
22 .028 .0006157 .0023717 .0130070 .038 26.3 
23 .024 .0004524 0017425 .0177050 .034 29.4 
24 .022 .00038012 0014642 .021070 .032 31.8 
25 .020 .0003142 .0012100 .025495 .030 33 3 
26 .018 -0002545 .00098016 031475 .028 35.7 
27 .0164 .0002112 .00081365 .037916 .0264 38.3 
28 .0148 .0001720 .00066263 .046558 .0250 40.0 
101. Wire Gauges.—In the design and manufacture of elee- 
