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Table 4 — Electrical Data (cont)
UNIT
SIZE
48E
NOMINAL
VOLTAGE
(3 Ph 60 Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM IFM
POWER
EXHAUST
COMBUSTION
FAN MOTOR
POWER SUPPLY
No. 1 No. 2
Min Max RLA LRA RLA LRA Qty Hp
FLA
(ea)
Hp FLA FLA LRA FLA MCA MOCP*
034
208/230 187 254 57.1 266 57.1 266 2 1 5.3
10
30.8/
28.0
— — 0.96 169.9/167.1 225/200
23.6 41.6 0.96 193.5/190.7 250/225
15
46.2/
42.0
— — 0.96 185.3/181.1 225/225
23.6 41.6 0.96 208.9/204.7 250/250
20
59.4/
54.0
— — 0.96 198.5/193.1 250/250
23.6 41.6 0.96 222.1/216.7 275/250
460 414 508 25.6 120 25.6 120 2 1 2.7
10 14.0
— — 0.50 77.0 100
12.6 23.6 0.50 89.6 110
15 21.0
— — 0.50 84.0 100
12.6 23.6 0.50 96.6 110
20 27.0
— — 0.50 90.0 110
12.6 23.6 0.50 102.6 125
575 518 632 20.5 96 20.5 96 2 1 2.4
10 11.0
— — 0.50 61.9 80
12.6 23.6 0.50 74.5 90
15 17.0
— — 0.50 67.9 80
12.6 23.6 0.50 80.5 100
20 22.0
— — 0.50 72.9 90
12.6 23.6 0.50 85.5 100
038
208/230 187 254 57.1 266 57.1 266 4 1 5.3
10
30.8/
28.0
— — 0.96 180.5/177.7 225/225
23.6 41.6 0.96 204.1/201.3 250/250
15
46.2/
42.0
— — 0.96 195.9/191.7 250/225
23.6 41.6 0.96 219.5/215.3 275/250
20
59.4/
54.0
— — 0.96 209.1/203.7 250/250
23.6 41.6 0.96 232.7/227.3 275/275
460 414 508 25.6 120 25.6 120 4 1 2.7
10 14.0
— — 0.50 82.4 100
12.6 23.6 0.50 95.0 110
15 21.0
— — 0.50 89.4 110
12.6 23.6 0.50 102.0 125
20 27.0
— — 0.50 95.4 110
12.6 23.6 0.50 108.0 125
575 518 632 20.5 96 20.5 96 4 1 2.4
10 11.0
— — 0.50 66.7 80
12.6 23.6 0.50 79.3 90
15 17.0
— — 0.50 72.7 90
12.6 23.6 0.50 85.3 100
20 22.0
— — 0.50 77.7 90
12.6 23.6 0.50 90.3 110
LEGEND
or
FLA — Full Load Amps
HACR — Heating, Air Conditioning and
Refrigeration
IFM — Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
OFM — Outdoor (Condenser) Fan Motor
RLA — Rated Load Amps
*Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combi-
nation load equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply volt-
age is greater than 2%.
Use the following formula to determine
the percent 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=5v
(BC) 464 − 457=7v
(AC) 457 − 455=2v
Maximum deviation is 7 v.
Determine percent 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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