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Table 15 — 38AUD 12, 14 Cooling without Powered Convenience Outlet
NOMINAL
POWER
VOLTAGE RANGE
SUPPLY
UNIT
SIZE
Volts
Min
575
518
12
208/230-3-60
187
460-3-60
414
575-3-60
518
14
208/230-3-60
187
460-3-60
414
Table 16 — 38AUD 12, 14 Cooling with Powered Convenience Outlet
NOMINAL
VOLTAGE
POWER
RANGE*
SUPPLY
UNIT
SIZE
Volts
Min
575-3-60
518
12
208/230-3-60
187
460-3-60
414
575-3-60
518
14
208/230-3-60
187
460-3-60
414
LEGEND
FLA
— Full Load Amps
LRA
— Locked Rotor Amps
MOCP — Maximum Over Current Protection
NEC
— National Electrical Code
RLA
— Rated Load Amps
1. The MCA and Fuse values are calculated in accordance with the
NEC Article 440.
2. Motor RLA and LRA values are established in accordance with
Underwriters Laboratories (UL) Standard 1995.
3. The 575-v units are UL, Canada-listed only.
4. Unbalanced 3-Phase Supply Voltage. Never operate a motor
where a phase imbalance in supply voltage is greater than 2%.
Use the following formula to determine the percentage of voltage
imbalance.
Example: Supply Voltage is 230-3-60
% Voltage Imbalance = 100 x
Example: Supply voltage is 230-3-60.
AB = 224 v
BC = 231 v
AC = 226 v
COMPRESSOR
No. 1
Max
RLA
LRA
633
5.7
39
253
15.9
110
506
7.7
52
633
7.7
54
253
22.4
149
506
10.6
75
COMPRESSOR
No. 1
Max
RLA
LRA
633
5.7
39
253
15.9
110
506
7.7
52
633
7.7
54
253
22.4
149
506
10.6
75
NOTES FOR TABLES 13-16
max voltage deviation from average
voltage
average voltage
COMPRESSOR
OFM
No. 2
RLA
LRA
Qty
5.7
39
2
15.9
110
2
7.7
52
2
7.7
54
2
22.4
149
2
10.6
75
2
COMPRESSOR
OFM
No. 2
RLA
LRA
Qty
5.7
39
2
15.9
110
2
7.7
52
2
7.7
54
2
22.4
149
2
10.6
75
2
* Units are suitable for use on electrical systems where voltage sup-
plied to the unit terminals is not below or above the listed limits.
Average Voltage =
Determine maximum deviation from average voltage.
(AB) 227
224 = 3 v
–
(BC) 231
227 = 4 v
–
(AC) 227
226 = 1 v
–
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance =
This amount of phase imbalance is satisfactory as it is below the max-
imum allowable 2%.
Important: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
NOTE: Check all factory and field electrical connections for tightness.
18
POWER SUPPLY
Fuse or
FLA
MCA
HACR
(ea)
Brkr
0.7
15
20
1.5
39/39
50/50
0.8
19
25
0.7
19
25
1.5
54/54
60/60
0.8
26
30
POWER SUPPLY
Fuse or
FLA
MCA
HACR
(ea)
Brkr
0.7
16
20
1.5
44/44
50/50
0.8
22
25
0.7
21
25
1.5
59/59
80/80
0.8
28
35
224 + 231 + 226
3
681
=
3
= 227
4
100x
226
=
1.76%
DISCONNECT
SIZE
FLA
LRA
15
82
40/40
226/226
20
108
19
112
55/55
304/304
26
154
DISCONNECT
SIZE
FLA
LRA
17
84
46/46
231/231
22
110
21
114
60/60
309/309
29
156
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