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Table 7: SAF Motor Nameplate Amperage
Horsepower
Type
208/60/3
230/60/3
400/50/3
1
460/60/3
575/60/3
FLA
FLA
FLA
FLA
FLA
3
Premium efficiency
9 .3
8 .2
4 .1
4 .1
3 .1
5
Premium efficiency
15 .7
13 .6
6 .8
6 .8
5 .2
7 .5
Premium efficiency
22 .3
20 .0
10 .0
10 .0
7 .4
10
Premium efficiency
29 .0
25 .8
12 .9
12 .9
10 .3
15
Premium efficiency
43 .4
37 .8
18 .9
18 .9
14 .1
20
Premium efficiency
57 .0
49 .0
24 .5
24 .5
18 .9
25
Premium efficiency
70 .0
61 .0
30 .5
30 .5
24 .2
30
Premium efficiency
83 .3
72 .4
36 .2
36 .2
29 .8
40
Premium efficiency
110 .0
96 .0
48 .0
48 .0
38 .0
50
Premium efficiency
137 .0
120 .0
60 .0
60 .0
47 .5
60
Premium efficiency
160 .0
140 .0
70 .0
70 .0
56 .0
Note:
1 . 460/60/3 motors are used . Derate nameplate horsepower to 0 .83 to obtain actual horsepower .
Supply Power Wiring
1 . Units require three-phase power supply .
2 . Allowable voltage tolerances:
a .
60 Hertz
Nameplate 208 V: Min . 187 V, Max . 229 V
Nameplate 230 V: Min . 207 V, Max . 253 V
Nameplate 460 V: Min . 414 V, Max . 506 V
Nameplate 575 V: Min . 518 V, Max . 632 V
b .
50 Hertz
Nameplate 400 V: Min . 342 V, Max . 418 V
3 . Power lead wire sizing:
a . For units with cooling capability (all concurrent
loads) with or without hot water heating and circuits
with motor loads only: MCA = 1.25 (largest motor
RLA or FLA) + other loads
4 . Size wires in accordance with
Table 310-16 or Table 310-
19 of the National Electrical Code .
5 . Size wires for a maximum of 3% voltage drop .
Lug Size
Table 8: Lug sizes for single disconnect
Disconnect size
Lug size
100
#12-3/0
150
#12-3/0
250
#8-350 MCM
400
(2) #8-600 MCM
600
(2) #8-600 MCM
Table 9: Lug sizes for power block
Power block size
Lug size
310
#6-350 MCM
420
#2-600 MCM
570
(2) #4-300 MCM
Note:
Use copper wire only . 760 (2) #6-500 MCM
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