Document baZ5QXYaKgzkevZo3Bmbe1XQo

liSM MOTOR and WIRE RATING DATA Wire, Fuse and Circuit Breaker Selection Tables FOR MOTOR BRANCH CIRCUITS--ADOPTED FROM 1962 N. E. CODE 271 For exceptions, see note at head of table 430-146,1962 W. . C,, also see paragraphs 430-22,430-24,430-34, and 430-59 of 1962 W, E. C. Full load current rating ot motor Amps. Min. allowable size ot copper conductor A.W.G. or Cir. Mil. for four conductors . in raceways. R?lfw. RU, RUW ThermoPlastic TypeT 14-4/0 Type TW 14-4/0 TrT .O For running protection of motors Mas. setting non-adjust- able protective devices Max, setting adjustable protective devices Amps. Amps. Maximum Allowable Rating of Setting of Branch Circuit Protective Devices 0 Single phase, squirrelcage, and synchronous, [full voltage, reactor and resistor starting] 0e Max. allowable rating of br. circuit fuses Max. allowable circuit breaker rating 0 Squirrel cage and synchronous [auto transformer starting]. 0 0 Max. allowable Max. circuit br. allowable rating of br. rating squirrel cage and circuit fuses synchron ous [autotransformer starting] O.C. and Wound Rotor AC. (Without code letters) 0 Max. allowable rating of branch circuit fuses Q Max. allowable circuit breaker rating Amps. Amps. Amps. Amps. Amps. Amps. 11 12 13 i4 14 14 @2 0 1.25 15 15 15 15 15 15 14 14 A3 0 2.50 15 15 15 15 15 15 14 14 04 0 3.75 15 15 15 15 15 15 14 14 n6 0 5.00 15 15 15 15 15 15 '5 O6 7 8 14 14 08 0 6.25 15 15 15 15 15 15 14 14 08 0 7.50 20 15 15 15 15 15 614 14 0 10 0 8.75 25 20 20 15 15 15 14 14 io 0 10.00 25 20 20 20 15 15 9 14 14 0 12 0 11.25 30 30 25 20 15 15 10 14 14 0 15 0 12.5 30 30 25 20 15 15 12 14 14 Q 15 15.0 40 30 30 30 20 20 14 12 12 20 17.5 45 40 35 30 25 30 16 12 12 0 20 20.0 50 40 40 40 25 30 18 10 10 25 22.5 60 50 45 40 30 30 20 10 10 25 25.0 60 50 50 40 30 30 22 10 10 30 27.5 70 70 60 50 35 40 24 10 10 30 30.0 80 70 60 50 40 40 26 8 8 35 32.5 80 70 70 70 40 40 28 8 8 35 35.0 90 70 70 70 45 50 30 8 8 40 37.5 90 100 80 70 45 50 32 8 8 40 40.0 100 100 70 70 50 50 34 6 8 45 42.5 110 100 70 70 60 70 36 6 8 45 45.0 110 100 80 100 60 70 38 6 6 50 47.5 125 100 80 100 60 70 40 6 6 50 50.0 125 100 80 100 60 70 42 6 6 50 52.5 125 125 90 100 70 70 44 6 6 60 55.0 125 125 90 100 70 70 46 4 6 60 57.5 150 125 100 100 70 70 48 . 50 52 54 4 6 60 60.0 150 125 100 100 80 100 4 6 60 62.5 150 125 100 100 80 100 4 6 70 65.0 175 150 110 125 80 ICO 4 4 70 67.5 175 150 110 125 90 100 56 4 4 70 70.0 175 150 125 125 90 100 58 3 4 70 72.5 175 150 125 125 90 100 60 3 4 80 75.0 200 150 125 125 90 100 62 3 4 80 77.5 200 175 125 125 100 100 64 3 4 80 80.0 200 175 150 150 100 100 66 2 4 80 82.5 200 175 150 150 100 100 68 2 4 90 85.0 225 175 150 150 110 125 70 2 3 90 87.5 225 175 150 150 110 125 72 2 3 90 90.0 225 200 150 150 110 125 74 2 3 90 92.5 225 200 150 150 125 125 76 2 3 100 95.0 250 200 175 175 125 125 78 1 3 100 97.5 250 200 175 175 125 125 80 1 3 100 100.0 250 200 175 175 125 125 82 1 2 110 102.5 250 225 175 175 125 125 no84 1 2 110 105.0 250 225 175 175 150 150 86 1 2 107.5 300 225 175 175 150 150 88 1 . 2 110 110.0 300 225 200 200 150 150 90 0 2 110 112.5 300 225 200 200 150 150 92 0 2 125 115.0 300 250 200 200 150 150 94 0 1 125 117.5 300 250 200 200 150 150 96 0 1 125 120.0 300 250 200 200 150 150 98 0 1 125 122.5 300 250 200 200 150 150 100 0 1 125 125.0 300 250 200 200 150 150 105 00 1 150 131.5 350 300 225 225 175 175 110 00 0 150 137.5 350 300 225 225 175 175 115 00 0 150 144.0 350 300 250 250 175 175 120 000 0 150 150.0 400 300 250 250 200 200 125 000 00 175 156.5 400 350 250 250 200 200 130 000 00 175 162.5 400 350 300 300 200 200 135 0000 00 175 169.0 450 350 300 300 225 225 140 0000 00 175 175.0 450 350 300 300 225 225 145 0000 000 200 181.5 450 400 300 300 225 225 150 0000 000 200 187.5 450 400 300 300 225 225 O Adapted from Table 430-146, N.iC Code. Q For the grouping of small motors under the protection of a single set of fuses see Section 430-53 The N. E. C. classifies motors by code letters. The values shown are for motors with code tetters F to N. E. Code. V inclusive and motors without code letters. For motors with code letters A to E inclusive refer to Fr the running protection of motors of 1 H.P. and less see Section 430-32 H. E. Code. N. I Code, Tables 430-146 ond 430-152. Adapted from Table 430-153, N. E. C Code. COO h5 hmoo O 50 2 I-- CO--I oo o--i oso oo oo I2o C zz o --i >--I ^o 5 go i zj o o< m O < cm o >oQ;h --3mQ4 3m0 O O 5- CO CUTLER-HAMMER 271 J