Table 3 — Electrical Data
UNIT
SIZE
50HS
V-Ph-Hz
COMPRESSOR
OFM
IFM
POWER SUPPLY
MOCP
RLA
LRA
FLA
FLA
MCA
MAX
018
208/230-1-60
10.4
49.0
0.7
1.8
15.5
25
024
208/230-1-60
11.2
61.0
1.4
2.0
17.4
25
030
208/230-1-60
14.4
82.0
1.4
2.6
22.0
30
208/230-3-60
10.4
65.5
1.4
2.6
17.0
25
036
208/230-1-60
18.0
96.0
1.4
2.8
26.7
40
208/230-3-60
11.4
75.0
1.4
2.8
18.5
25
460-3-60
4.8
40.0
0.8
1.4
9.0
10
042
208/230-1-60
20.4
102.0
1.4
4.0
30.9
50
208/230-3-60
14.0
91.0
1.4
4.0
22.9
30
460-3-60
6.4
42.0
0.8
2.0
10.8
15
048
208/230-1-60*
24.4
140.0
2.1
5.0
40.1
60
208/230-1-60†
26.4
129.0
2.1
5.0
40.1
60
208/230-3-60*
14.1
105.0
2.1
5.0
25.9
35
208/230-3-60†
15.0
99.0
2.1
5.0
25.9
40
460-3-60*
7.1
55.0
1.1
2.3
13.7
15
460-3-60†
8.2
49.5
1.1
2.3
13.7
20
060
208/230-1-60*
28.9
165.0
2.1
6.2
48.4
60
208/230-1-60†
32.1
169.0
2.1
6.2
48.4
60
208/230-3-60*
16.0
125.0
2.1
6.2
32.4
40
208/230-3-60†
19.3
123.0
2.1
6.2
32.4
50
460-3-60*
8.0
66.0
1.1
3.2
16.8
20
460-3-60†
10.0
62.0
1.1
3.2
16.8
25
LEGEND
CSA
— Canadian Standards Association
FLA
— Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM
— Indoor-Fan Motor
LRA
— Locked Rotor Amps
MCA
— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
(fuses or HACR-type circuit breaker)
NEC
— National Electrical Code
OFM
— Outdoor-Fan Motor
RLA
— Rated Load Amps
*Carrier Scroll Compressor.
†Copeland Scroll Compressor.
NOTES:
1. In compliance with NEC requirements for multimotor and combi-
nation load equipment (refer to NEC Articles 430 and 440), the over-
current protective device for the unit shall be fuse or HACR breaker.
The CSA units may be fuse or circuit breaker.
2. 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 per-
cent of voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
1371
=
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more
than 2%, contact your local electric utility company immediately.
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