Trane CDHF, Engineering Bulletin

Page: 60 / 82

60 CTV-PRB004-EN
Electrical System–Power Wire Sizing
Table 15. MCA look-up table for 90°C copper conductors rated for 2,001–5,000 Volts
(a)
(a) Based on 2011 NEC Table 310.60(C)(73)
Wire Size
1 Conduit
3 Wires
2 Conduits
3 Wires ea.
3 Conduits
3 Wires ea.
8 55
6 75
4 97
2 130
1 155
0 180 360 540
00 205 410 615
000 240 480 720
0000 280 560 840
250 315 630 945
350 385 770 1155
500 475 950 1425
750 600 1200 1800
Note:
Use this table to select line-side wiring to the starter and load-side wiring between the starter and the motor. Value in
table must be larger than the MCA to use the wire combination.
Table 16. MCA look-up table for 90°C copper conductors rated for 5,001–35,000 Volts
(a)
(a) Based on 2011 NEC Table 310.60(C)(73)
Wire size
1 Conduit
3 Wires
2 Conduits
3 Wires ea.
3 Conduits
3 Wires ea.
6 83
4 110
2 150
1 170
0 195 390 585
00 225 450 675
000 260 520 780
0000 295 590 885
250 330 660 990
350 395 790 1185
500 480 960 1440
750 585 1170 1755
Note:
Use this table to select line-side wiring to the starter and load-side wiring between the starter and the motor. Value in
table must be larger than the MCA to use the wire combination.
CTV-PRB004.book Page 60 Sunday, December 18, 2011 6:39 PM