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Given a 25 hp, three-phase, 230-volt, squirrel cage induction motor. The ambient temperature of the place of installation is 40°C. Use TW wires

Given a 25 hp, three-phase, 230-volt, squirrel cage induction motor. The ambient temperature of the place of installation is 40°C. Use TW wires

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Given a 25 hp, three-phase, 230-volt, squirrel cage induction motor. The ambient temperature of the place of
installation is 40°C. Use TW wires

Table Al – Allowable Ampacities of Insulated Conductors Rated 0 through 2,000 Volts, 60°C Through 90°C not more than Three Current-Carrying Conductors in Raceways, Cable, Based on Ambient Temperature of 30°C Temperature Rating of Conductor 90°C 60°C 75°C Турes FEPW, RH, RHW, THHW, THW, THWN, XHHW, USE, ZW 60°C 75°C 90°C Турез TBS, SA, SIS, FEP, FЕPB, M, RHH, ZW-2, RHW-2, THHN, THHW, THW-2, THWN-2, XHHW, XHHW-2 Турes RH, RHW, THHW, THW, THWN, XHHW, USE Турes TBS, SA, SIS, THHN, THHW, THW_2, THWN- 2, USE-2, XHH, XHHW, ZW-2, XHHW-2 Conductor Size [mm'] Турes TW, Турes TW, UF UF ALUMINUM or COPPER- СОРPER CLAD ALUMINUM 2.0 20 20 25 3.5 25 25 30 20 20 25 5.5 30 35 40 25 30 35 8.0 40 50 55 30 40 45 14 55 65 70 40 50 65 22 70 85 90 55 65 80 30 90 110 115 65 80 90 38 100 125 130 75 90 105 50 120 145 150 95 110 125 60 135 160 170 100 120 135 80 160 195 205 120 145 165 185 210 100 220 140 190 225 265 295 170 125 255 165 200 225 150 240 280 185 225 250 200 280 330 355 220 265 300 250 315 375 400 255 305 345 325 370 435 470 305 365 410 400 405 485 515 335 405 460 00 445 540 580 370 440 495 CORRECTIONFACTOR Ambient For ambient temperatures other than 30°C, multiply the allowable ampacities showWn above by the appropriate factor shown below 1.05 Теmp. ("C) 21 - 25 26 - 30 31- 35 36- 40 41 -45 1.08 1.04 1.08 1.05 1.04 1.00 1.00 1.00 1.00 1.00 1.00 0.91 0.94 0.96 0.91 0.94 0.96 0.82 0.88 0.91 0.82 0.88 0.91 0.71 0.82 0.75 0.67 0.82 0.87 0.71 0.87 0.75 0.67 0.58 0.33 46 – 50 0.58 0.82 0.58 0.82 0.76 0.41 0.76 0.71 51-55 0.41 56 - 60 0.71 0.58 61 - 70 71- 80 Source: Philippine Electrical Code 2000 Part 1, Vol. 1 0.58 0.33 0.58 0.41 0.41
Transcribed Image Text:Table Al – Allowable Ampacities of Insulated Conductors Rated 0 through 2,000 Volts, 60°C Through 90°C not more than Three Current-Carrying Conductors in Raceways, Cable, Based on Ambient Temperature of 30°C Temperature Rating of Conductor 90°C 60°C 75°C Турes FEPW, RH, RHW, THHW, THW, THWN, XHHW, USE, ZW 60°C 75°C 90°C Турез TBS, SA, SIS, FEP, FЕPB, M, RHH, ZW-2, RHW-2, THHN, THHW, THW-2, THWN-2, XHHW, XHHW-2 Турes RH, RHW, THHW, THW, THWN, XHHW, USE Турes TBS, SA, SIS, THHN, THHW, THW_2, THWN- 2, USE-2, XHH, XHHW, ZW-2, XHHW-2 Conductor Size [mm'] Турes TW, Турes TW, UF UF ALUMINUM or COPPER- СОРPER CLAD ALUMINUM 2.0 20 20 25 3.5 25 25 30 20 20 25 5.5 30 35 40 25 30 35 8.0 40 50 55 30 40 45 14 55 65 70 40 50 65 22 70 85 90 55 65 80 30 90 110 115 65 80 90 38 100 125 130 75 90 105 50 120 145 150 95 110 125 60 135 160 170 100 120 135 80 160 195 205 120 145 165 185 210 100 220 140 190 225 265 295 170 125 255 165 200 225 150 240 280 185 225 250 200 280 330 355 220 265 300 250 315 375 400 255 305 345 325 370 435 470 305 365 410 400 405 485 515 335 405 460 00 445 540 580 370 440 495 CORRECTIONFACTOR Ambient For ambient temperatures other than 30°C, multiply the allowable ampacities showWn above by the appropriate factor shown below 1.05 Теmp. ("C) 21 - 25 26 - 30 31- 35 36- 40 41 -45 1.08 1.04 1.08 1.05 1.04 1.00 1.00 1.00 1.00 1.00 1.00 0.91 0.94 0.96 0.91 0.94 0.96 0.82 0.88 0.91 0.82 0.88 0.91 0.71 0.82 0.75 0.67 0.82 0.87 0.71 0.87 0.75 0.67 0.58 0.33 46 – 50 0.58 0.82 0.58 0.82 0.76 0.41 0.76 0.71 51-55 0.41 56 - 60 0.71 0.58 61 - 70 71- 80 Source: Philippine Electrical Code 2000 Part 1, Vol. 1 0.58 0.33 0.58 0.41 0.41
Table 2 – Full-Load Current for Single-Phase and Three-Phase Alternating Current Motors Power Full-load current at 230 Volts Amperes kW hp 1/6 Single-phase Three-phase 0.12 2.2 0.19 1/4 2.9 0.25 1/3 3.6 0.37 1/2 4.9 2.2 0.56 3/4 6.9 3.2 0.75 1 8.0 4.2 1.12 1 1/2 10.0 6.0 1.49 2 12 6.8 2.24 3 17 9.6 3.73 5 28 15.2 5.60 7 1/2 40 22 7.46 10 50 28 11.19 15 42 14.92 20 54 18.65 25 68 22.38 30 80 29.84 40 104 Adapted from Philippine Electrical Code 2000 Part 1, Vol.1
Transcribed Image Text:Table 2 – Full-Load Current for Single-Phase and Three-Phase Alternating Current Motors Power Full-load current at 230 Volts Amperes kW hp 1/6 Single-phase Three-phase 0.12 2.2 0.19 1/4 2.9 0.25 1/3 3.6 0.37 1/2 4.9 2.2 0.56 3/4 6.9 3.2 0.75 1 8.0 4.2 1.12 1 1/2 10.0 6.0 1.49 2 12 6.8 2.24 3 17 9.6 3.73 5 28 15.2 5.60 7 1/2 40 22 7.46 10 50 28 11.19 15 42 14.92 20 54 18.65 25 68 22.38 30 80 29.84 40 104 Adapted from Philippine Electrical Code 2000 Part 1, Vol.1
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