. Electric railway journal . 000 0-325 105,600 54,500 2-3 83,52o 56,000 66,560 57,5°° 52,440 58,500 41,620 59,500 33,I2<o 60,500 i-7 26,240 61,500 20,740 62,500 i-5 16,380 63,400 12,996 64,200 1-3 10,404 64,800 8,281 65,400 6,561 65,700 5,i84 66,000 4,096 66,200 3,249 66,400 2,601 66,600 2,025 66,800 1,600 67,000 For wire whose nominal diameter is between listed sizes,the requirements shall be those of the next larger siz
. Electric railway journal . 000 0-325 105,600 54,500 2-3 83,52o 56,000 66,560 57,5°° 52,440 58,500 41,620 59,500 33,I2<o 60,500 i-7 26,240 61,500 20,740 62,500 i-5 16,380 63,400 12,996 64,200 1-3 10,404 64,800 8,281 65,400 6,561 65,700 5,i84 66,000 4,096 66,200 3,249 66,400 2,601 66,600 2,025 66,800 1,600 67,000 For wire whose nominal diameter is between listed sizes,the requirements shall be those of the next larger sizeincluded in the table. 9. Electric conductivity shall be determined upon fairsamples by resistance measurements at a temperature of20 deg. C. (68 deg. F.). The wire shall not exceed thefollowing limits: For diameters in. to in., lb. per mile-ohm at 20 deg. C. For diameters in. to in., lb. per mile-ohm at 20 deg. C. GROOVED TROLLEY WIRE 10. Standard sections shall be those known as the. A _ ^ ^_ ^ 211,600 ~Ckl7 166, IOO~CM 133, 200 CM. American Standard Sections for Grooved Trolley Wire American Standard grooved trolley wire sections, theshape and dimensions of which are shown in the accom-panying drawing. 11. (a) Size shall be expressed as the area of cross-section in circular mils, the standard sizes being as follows: 211,600 circular mils, weighing 3386 lb. per mile. 168,100 circular mils, weighing 2690 lb. per mile. 133,200 circular mils, weighing 2132 lb. per mile.(b) Grooved trolley wire may vary 4 per cent over orunder in weight per unit length from standard, as de-termined from the nominal cross-section. 12. The physical tests shall be made in the same manneras those upon round wire. The tensile strength of groovedwire shall be at least 95 per cent of that required forround wire of the same sectional area; the elongation shallbe the same as that required for round wire of the samesectional area. 13. The requirements for electric c
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