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#D
Table 4A — Unit Electrical Data, 30HXC Units (cont)
LEGEND
*All units have one MCA, MOCP and fuse size value. All units require
one power supply.
†Wye-delta start is standard, not available in across-the-line start.
NOTES:
1. Each main power source must be supplied from a field-supplied fused
electrical service with a (factory- or field-installed) disconnect located
in sight from the unit.
2. Control circuit power must be supplied from a separate source
through a field-supplied disconnect (except for 380/415-50 units). The
control circuit accessory transformer may be applied to power from
the main unit power supply.
3. Maximum incoming wire size for each terminal block is 500 kcmil.
4. Maximum allowable phase imbalance is: voltage, 2%; amps, 5%.
5. Use copper conductors only.
6. The MOCP is calculated as follows:
MOCP = (2.25) (largest RLA) + the sum of the other RLAs. Size the
fuse one size down from the result. The RLAs are listed on the unit
nameplate.
The recommended fuse size in amps (RFA) is calculated as follows:
RFA = (1.50) (largest RLA) + the sum of the other RLAs. Size the
fuse one size up from the result. The RLAs are listed on the unit
nameplate.
UNIT
30HXC
UNIT VOLTAGE
POWER CIRCUIT*
CONTROL CIRCUIT
V-Hz
(3 Ph)
Supplied
Power
Supply
Qty
Req’d
No. of
Power Supply
Conductors
Req’d
MCA
MOCP
ICF
Recommended
Fuse Size
V-Hz
(Single Ph)
Supplied
MCA
and
MOCP
Min
Max
XL
WD
Min
Max
161
230-60
207
253
1
6
398.7
600
†
574.8
500
115-60
104
127
15
208/230-60
187
253
1
6
443.0
600
†
590.6
600
115-60
104
127
15
460-60
414
506
1
3
200.1
300
756.2
287.2
250
115-60
104
127
15
575-60
518
633
1
3
159.9
225
604.9
229.9
200
115-60
104
127
15
380-60
342
418
1
3
242.2
350
843.2
325.2
300
230-60
207
254
15
380/415-50
342
440
1
3
249.0
350
944.2
358.2
300
230-50
198
254
15
230-50
207
253
1
6
411.3
600
†
577.7
500
230-50
207
254
15
171
230-60
207
253
1
6
428.4
600
†
604.5
500
115-60
104
127
15
208/230-60
187
253
1
6
476.0
700
†
623.6
600
115-60
104
127
15
460-60
414
506
1
3
215.0
300
771.1
302.1
250
115-60
104
127
15
575-60
518
633
1
3
171.8
250
616.8
241.8
200
115-60
104
127
15
380-60
342
418
1
3
260.2
350
861.2
343.2
300
230-60
207
254
15
380/415-50
342
440
1
3
266.6
350
961.8
375.8
300
230-50
198
254
15
230-50
207
253
1
6
440.4
600
†
606.8
500
230-50
207
254
15
186
230-60
207
253
1
6
462.3
600
†
638.5
600
115-60
104
127
15
208/230-60
187
253
1
6
513.7
700
†
661.3
600
115-60
104
127
15
460-60
414
506
1
3
232.0
300
788.1
319.1
300
115-60
104
127
15
575-60
518
633
1
3
185.4
250
630.4
255.4
225
115-60
104
127
15
380-60
342
418
1
3
280.8
400
881.8
363.8
350
230-60
207
254
15
380/415-50
342
440
1
3
289.4
400
984.6
398.6
350
230-50
198
254
15
230-50
207
253
1
6
478.1
600
†
644.5
600
230-50
207
254
15
206
230-60
207
253
1
6
524.5
700
—
700.7
600
115-60
104
127
15
208/230-60
187
253
1
6
582.8
800
—
730.4
700
115-60
104
127
15
460-60
414
506
1
3
263.2
350
819.3
350.3
300
115-60
104
127
15
575-60
518
633
1
3
210.4
250
655.4
280.4
250
115-60
104
127
15
380-60
342
418
1
3
318.6
400
919.6
401.6
350
230-60
207
254
15
380/415/50
342
440
1
3
326.8
450
1022.0
436.0
400
230-50
198
254
15
230-50
207
253
1
6
539.8
700
—
706.2
600
230-50
207
254
15
246
230-60
207
253
1
6
604.1
800
—
780.3
700
115-60
104
127
15
208/230-60
187
253
1
6
671.3
800
—
818.9
800
115-60
104
127
15
460-60
414
506
1
3
303.2
400
859.3
390.3
350
115-60
104
127
15
575-60
518
633
1
3
242.3
300
687.3
312.3
300
115-60
104
127
15
380-60
342
418
1
3
367.0
450
968.0
450.0
400
230-60
207
254
15
380/415-50
342
440
1
3
377.6
500
1072.8
486.8
450
230-50
198
254
15
230-50
207
253
1
6
623.8
800
—
790.2
700
230-50
207
254
15
261
230-60
207
253
1
6
633.8
800
—
810.0
700
115-60
104
127
15
208/230-60
187
253
1
6
704.3
800
—
851.9
800
115-60
104
127
15
460-60
414
506
1
3
318.1
400
874.2
405.2
350
115-60
104
127
15
575-60
518
633
1
3
254.2
300
699.2
324.2
300
115-60
104
127
15
380-60
342
418
1
6
385.0
500
986.0
468.0
450
230-60
207
254
15
380/415-50
342
440
1
6
395.2
500
1090.4
504.4
450
230-50
198
254
15
230-50
207
253
1
6
652.9
800
—
819.3
800
230-50
207
254
15
271
230-60
207
253
1
6
667.8
800
—
843.9
800
115-60
104
127
15
208/230-60
187
253
1
6
742.0
800
—
889.6
800
115-60
104
127
15
460-60
414
506
1
3
335.1
400
891.2
422.2
400
115-60
104
127
15
575-60
518
633
1
3
267.8
350
712.8
337.8
300
115-60
104
127
15
380-60
342
418
1
6
405.6
500
1006.6
488.6
450
230-60
207
254
15
380/415-50
342
440
1
6
418.0
500
1113.2
527.2
500
230-50
198
254
15
230-50
207
253
1
6
690.6
800
—
857.0
800
230-50
207
254
15
FLA
—
Full Load Amps
ICF
—
Maximum Instantaneous Current Flow during start-up (the
point in the starting sequence where the sum of the LRA
for the start-up compressor, plus the total RLA for all run-
ning compressors, plus the total FLA for all running fan
motors is at a maximum)
LRA
—
Locked Rotor Amps
MCA
—
Minimum Circuit Ampacity (for wire sizing)
MOCP —
Maximum Overcurrent Protection
RLA
—
Rated Load Amps
WD
—
Wye-Delta Start
XL
—
Across-the-Line Start
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