Application
Table 43.1
Required Cable Size
Frame
Sensor Rating or Rating Plug
Cable Size and Quantity
Cable M i n Temp.
Rating (Amps)
Rating (Amps)
Copper Cables
Aluminum Cables
Rating Carrying
100%
Continuously
(•c)
Qty.
Size lmcm)
Qty.
Size lmcm)
200
1
3/0
1
250
75
800
400
1
600
2
250
75
600
2
3 50
2
500
75
800
2
or 3
600 or 300
3
400
75
800
3
300
3
400
75
1600
1000
3
400
4
350
75
1200
4
3 50
4
500
75
1600
5
400
5
600
90Q)
2000
2000
6
400
6
600
90Q)
2500
2000
6
400
6
600
75
2500
7
500
8
600
90Q)
3000
3000
8 or 9
400 or 500
9 or 10
500 or 600
90Q)
4000
4000
10 or 1 1
500 or 600
12 or 13
500 or 600
90Q)
Q)
100%
Continuous load requires use of 90'C cable sized to 75'C ampacity. Lugs must be m a rked CU9AL or AL9CU or AL9 denoting suitability with
90'C
cable.
Table 43.2
Required Bus Size - Bare Or Tinned Copper
Frame Rating
Bus Bars Per Terminal
(Amps)
Number
Size i n (Inches)
1600
2
% X 3
2000
2
% X 4
2500
2
% X 5
4
114 X 2 1/z
3000
4
114 X 4
4000
4
% X 5
Table 43.3
Properties Of Conductors
Size
Area Cir.
Cone.
Cone. Lay
Bare
Area
DC
DC
DC
Equiv.
ISO Metric
AWG/
Mills
Lay O r
or Stranded
Conductors
Square
Resistance*
Resistance*
Resistance* Cross Sect.
Cable Size
KCMIL
Stranded
Diameter/
Diameter
Inches
Bare
Tinned
Aluminum
Area AWG/
(mm)2
No. Wires
Wire (in.)
Copper
Copper
KCMIL
3/0
167.800
19
0.0940
0.470
0.173
0.0642
0.0668
0.105
85
95
250
250.000
3 7
0.0822
0.575
0.260
0.0431
0.0449
0.0708
127
120
300
300.000
3 7
0.0900
0.630
0.3 12
00308
0.0374
0.0590
152
150
350
350.000
37
0.0973
0.681
0.364
0.0320
0.0333
0.0505
177
185
400
400,000
3 7
0.1040
0.728
0.416
0.0270
0 0278
0.0442
202
-
500
500,000
37
0.1162
0.813
0.519
0.0216
0.0222
0.0354
253
240
600
600,000
61
0.0992
0.893
0.626
0.0180
0.0187
0.0295
304
300
750
750,000
61
0.1 109
0.998
0.782
0.0144
0.0148
0.0236
380
-
*
Note DC resistance values are shown in ohms per 1000 feet at 25°C (77°F).
43
www . ElectricalPartManuals
. com
www
. ElectricalPartManuals
. com
