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3000. 51

5000.

8000. 12 110 12000. 15! 123 15000. 20 142 20000. 25 158 25000. 30 173 30000.

35000. 2001 40000. 212

45000. 224 50000. 23.5 55000. 215 60000. 255 65000. 265 70000. 274 75000. 283 80000. 292

85000. 300 99000.

95000.. 100 316 100000 110 332 110000. 120 346 120000. 130 361 130000. 110 374

140000. 150 387 150000.

160000. 170 412 170000. 180 424 180000. 190 436 190000. 200447 200000.

12.5 .0034976 18.3 .0020986 26.0 .0013118 35.2 .0008746 41.6 .0006997 51.6 .0005217 61.1) .0001198 70.0

.0003198 78.6 .0002999 86.8

.0002624 94.9 .0002332 102.7 ..0002099 110.3

.0001908 117.7 .0001719 125.0 .0001615 132.1 .0001499 139.1 .0001399 146.0

.0001312 152.8 .0001235 159.5 .0001166 166.1

.0001105 172.6

.0001019 185.4 .000095+ 198.0 .0000815 210.2 .0000807 222.2 .000750 231.0 .0000700 215.6 .0000656 257.0 .0000617 268.3 :.0000583 279.4: 1.0000552 290.4 0000525

00908372 01513924 02122034 03632824 04510984 06051810 07568210 09081666 .10595183 .12108200 .13622748 .15135683 . 16650083 .18162452 '.19677218

.21190130 '.22701321 .21217618 .25730319 .27213150 .28758723 .30270928 .33299060 .36326663 .39352714 .42379665 . 15106110 .48132800 .51462206 .51488:23 .37510978 ,60512731

95 308

Formula for Calculating Wire for New

Style Lamps.

(of lamps) x (mean distance) x 10. Cir, mils. '

(pur cent. loss.) Divide by 4 for 3 wire system.

3

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EDISON SYSTEM.
TABLE OF CONSTANTS FOR CALCULATING WIRE.

Constants for one 16 c. p. Lamp (3.1 Watts.
Distance

PER CENT. LOSS IN WIRE.
in Feet.
4 5 6 8 10

15 20
25 500

250
1000 500 250
1500

375 250 188
100 2000 1000 500 333 250 200
125 2500 1250 625

417

313 250
150 3000 1500 750 500 375 300 250 188
200 4000 2000 1000 667 500 400

330

250 200
300 6000

3000
1500 1000 750 600 590

200
400
8000 4000 2000 1333 1000

800
667
500
333 267

200
500

10000 5000 2500 1667 1250 1000 833 625 500 417 333 | 250
600 12000 6000 3000 2000 1500 1200 1000 750 600 500 400 300
800 16000 8000 4000 2667 2000 1600 1333 1000 800 667 533 400
1000 20000 10000 5000 3333 2500 2000 1667 1250

1000
833
667

500
1200 21000 12000 6000 4000 3000 2100 2000 1500 1200 1000 800 000
1500 30000 15000 7500 5600 3750 2000 2500 1875 1500 1250 1000 750
1800 36000 18000 19000 6000 4500 3600 3000 2250 1800 1500 1200 900
2000 40000 20000 10000 6667 15000 4000 3300 2500 2000 1667 1333 | 1000

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375

250

300
400

Cir. Mils.=Number of Lamps x by above Constant.
Divide by 4 for 3-wire System.
Check Size Wire for Ampere Capacity in using Tahle.

TABLE OF WIRE "B. AND S.” GAUGE.

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Canto por Foot Covored,
At 160. Ib. * At 18c. Ib. At 200. Ib.

.1814 .1478 . 1642
.099
.1114

1238
.0708
.0794

.0882
.057

.0641 .0712
.0454 .0511

.0668
.0376
.0423

0170
0306

0344 .0382
.0253
.0284

.0316
.0203 .0229 .0254
.0163 .0184

0204
.0136

.0153 .017
.011
.0124

.0138
0086

0097 .v108
.0075

0085

.0094
.0058 .0065

.0072
.005
.0056

0069 .0042 .0047 .0052 .0082

.0036 .004

58

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162

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102

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054

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102
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.025
.02
.016
.012

017
036
031
026

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THE WESTING

16. [16.

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| 0.

. | 0 Distance in Feet to Berter of Distribution.

|| . | 25'. | 30, ) $5', \ u0'. | APONI!! ex 16.រ.).

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WIRING TABLE FOR 50 VOLT LAMPS.

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HOUSE SYSTEM.

LOSS 1 VOLT=2 PER CENT.

Wire Sizes are lodicated Below in B. & S. Gauge. 70. ၂ . $0. ၂ 100.110.110.100.110. | 20.

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10.cp. 0.7 a. 16. fး 1. •• 25. 1.0

50. • 3. in ။ ( ။

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