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52
581J*17-28 MCA MOCP ELECTRICAL DATA
LEGEND
NOTES:
1. Refer to Packaged Rooftop Builder (Selection Software) for additional electri-
cal data.
2. In compliance with NEC requirements for multimotor and combination 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.
3. For 208/230 v units, where one value is shown it is the same for either 208 or
230 volts.
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
AB = 224 v
BC = 231 v
AC = 226 v
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.
This amount of phase imbalance is satisfactory as it is below the maximum allowable
2%.
581J
UNIT
TYPE
NOM.
V-Ph-Hz
IFM TYPE
NO CONVENIENCE OUTLET OR UNPOWERED CONVENIENCE
OUTLET
WITH POWERED CONVENIENCE OUTLET
NO POWERED EXHAUST
WITH POWERED EXHAUST
(POWERED FROM UNIT)
NO POWERED EXHAUST
WITH POWERED EXHAUST
(POWERED FROM UNIT)
MCA
HACR
BRKR
DISC. SIZE
MCA
HACR
BRKR
DISC. SIZE
MCA
HACR
BRKR
DISC. SIZE
MCA
HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
17
208/230-3-60
STD
68.3 90 71 393 80.1 100 85 413 73.1 90 77 398 84.9 100 90 68.3
MED
71.4 90 75 423 83.2 100 88 443 76.2 100 80 428 88.0 100 94 71.4
HIGH
74.4 90 78/77 425 86.2 100 92/91 445 79.2 100 84/83 430 91.0 100 97/96 74.4
460-3-60
STD
34.9 45 36 234 41.1 50 44 246 37.1 45 39 236 43.3 50 46 34.9
MED
36.8 45 39 249 43.0 50 46 261 39.0 50 41 251 45.2 50 48 36.8
HIGH
37.9 50 40 250 44.1 50 47 262 40.1 50 42 252 46.3 50 50 37.9
575-3-60
STD
26.2 30 27 184 31.0 40 33 192 27.9 35 29 186 32.7 40 35 26.2
MED
26.2 30 27 184 31.0 40 33 192 27.9 35 29 186 32.7 40 35 26.2
HIGH
29.0 35 31 198 33.8 40 36 206 30.7 40 33 200 35.5 45 38 29.0
20
208/230-3-60
STD
75.7 100 79 440 87.5 100 93 460 80.5 100 85 445 92.3 100 98 75.7
MED
79.1 100 83/82 455 90.9 100 97/96 475 83.9 100 89/88 460 95.7 110 102/101 79.1
HIGH-HE
82.6 100 87 451 94.4 110 101 471 87.4 100 93 456 99.2 125 106 82.6
460-3-60
STD
36.6 45 38 245 42.8 50 46 257 38.8 50 41 247 45.0 50 48 36.6
MED
38.2 50 40 252 44.4 50 47 264 40.4 50 43 254 46.6 50 50 38.2
HIGH-HE
40.4 50 43 250 46.6 50 50 262 42.6 50 45 252 48.8 60 52 40.4
575-3-60
STD
26.2 30 27 186 31.0 40 33 194 27.9 35 29 188 32.7 40 35 26.2
MED
29.0 35 31 200 33.8 40 36 208 30.7 40 33 202 35.5 45 38 29.0
HIGH-HE
31.0 40 33 198 35.8 45 38 206 32.7 40 35 200 37.5 45 40 31.0
24
208/230-3-60
STD
86.6 100 91 574 98.4 125 105 594 91.4 100 97 579 103.2 125 111 86.6
MED-HE
86.6 100 91 574 98.4 125 105 594 91.4 100 97 579 103.2 125 111 86.6
HIGH-HE
98.0 125 105 653 109.8 125 118 673 102.8 125 110 658 114.6 125 124 98.0
460-3-60
STD
45.3 50 48 310 51.5 60 55 322 47.5 60 50 312 53.7 60 58 45.3
MED-HE
45.3 50 48 310 51.5 60 55 322 47.5 60 50 312 53.7 60 58 45.3
HIGH-HE
51.0 60 54 350 57.2 70 62 362 53.2 60 57 352 59.4 70 64 51.0
575-3-60
STD
33.4 40 35 232 38.2 45 41 240 35.1 45 37 234 39.9 50 43 33.4
MED-HE
35.4 45 37 230 40.2 50 43 238 37.1 45 39 232 41.9 50 45 35.4
HIGH-HE
37.3 45 40 257 42.1 50 45 265 39.0 50 42 259 43.8 50 47 37.3
28
208/230-3-60
STD
116.6 150 120/119 591 128.4 175/175 134/133 611 121.4 150/150 126/125 596 133.2 175/175 139/138 116.6
MED-HE
120.1 150 124 587 131.9 175 138 607 124.9 150 130 592 136.7 175 143 120.1
HIGH-HE
131.5 175 137 666 143.3 175 151 686 136.3 175 143 671 148.1 175 157 131.5
460-3-60
STD
51.1 60 53 321 57.3 70 60 333 53.3 60 56 323 59.5 70 63 51.1
MED-HE
53.3 60 56 319 59.5 70 63 331 55.5 70 58 321 61.7 80 66 53.3
HIGH-HE
59.0 70 62 359 65.2 80 70 371 61.2 70 65 361 67.4 80 72 59.0
575-3-60
STD
40.5 50 42 256 45.3 50 48 264 42.2 50 44 258 47.0 60 50 40.5
MED-HE
42.5 50 45 254 47.3 60 50 262 44.2 50 47 256 49.0 60 52 42.5
HIGH-HE
44.4 50 47 281 49.2 60 52 289 46.1 60 49 283 50.9 60 54 44.4
BRKR — Circuit Breaker
DISC — Disconnect
FLA — Full Load Amps
HACR — Heating Air-conditioning And Refrigeration
IFM — Indoor Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
RLA — Rated Load Amps
% Voltage Imbalance = 100 x
max voltage deviation from average voltage
average voltage
Average Voltage =
(224 + 231 + 226)
=
681
= 227
3 3
% Voltage Imbalance = 100x
4
= 1.78%
227
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your
local electric utility company immediately.
A B C
MOTOR
ELECTRICAL DATA (cont)