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Table 4B — Unit Electrical Data, 30HXA Units* (cont)
UNIT
30HXA
VOLTAGE
POWER CIRCUIT CONTROL CIRCUIT ICF
Nameplate
(3 Ph)
Supplied
Min Max MCA MOCP
Recommended
Fuse Size
Voltage
(Single
Ph)
Min Max MCA MOCP WD XL
161
208/230-60 187 253 437/295 700/500 600/400 115-60 104 127
15 15
979 †
460-60 414 506 304 450 350 115-60 104 127 478 1282
575-60 518 633 243 350 300 115-60 104 127 382 1025
380-60 342 418 368 500 450 230-60 207 254 539 1428
230-50 207 253 415/275 700/450 500/350 230-50 198 254 858 †
346-50 325 380 276/183 450/300 350/225 230-50 198 254 535 †
380/415-50 342 440 385 500 450 230-50 198 254 533 1398
171
208/230-60 187 253 359/437 600/700 450/600 115-60 104 127
15 15
1030 †
460-60 414 506 327 450 400 115-60 104 127 501 1305
575-60 518 633 261 350 300 115-60 104 127 401 1044
380-60 342 418 396 500 450 230-60 207 254 567 1456
230-50 207 253 334/415 600/700 450/500 230-50 198 254 905 †
346-50 325 380 222/276 350/450 300/350 230-50 198 254 616 †
380/415-50 342 440 413 600 500 230-50 198 254 562 1427
186
208/230-60 187 253 437/437 700/700 600/600 115-60 104 127
15 15
1093 †
460-60 414 506 355 500 400 115-60 104 127 529 1333
575-60 518 633 284 400 350 115-60 104 127 539 1066
380-60 342 418 239/239 400/400 300/300 230-60 207 254 601 1490
230-50 207 253 415/415 700/700 500/500 230-50 198 254 970 †
346-50 325 380 276/276 450/450 350/350 230-50 198 254 660 †
380/415-50 342 440 453 600 600 230-50 198 254 601 1466
LEGEND
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 running compressors, plus the total FLA for all run-
ning fan motors is at a maximum)
MCA — Minimum Circuit Ampacity (for wire sizing)
MOCP — Maximum Overcurrent Protection
RLA — Rated Load Amps
WD — Wye-Delta Start
XL — Across-the-Line Start
*Refer to Carrier’s electronic catalog for the most current electrical
data.
†Wye-Delta Start is standard. Not available in across-the-line start.
**The 30HX186 units have 2 terminal blocks/non-fused disconnects
and 6 parallel conductors/non-fused disconnects.
††The 30HXA136-186 units have 2 terminal blocks/non-fused
disconnects and 6 parallel conductors/non-fused disconnects.
NOTES:
1. Main power must be supplied from a field-supplied fused electri-
cal service with a (factory- or field-installed) disconnect located in
sight from the unit.
2. Control circuitpower mustbe supplied froma separatesource through
a field-supplied disconnect. The control circuit accessory trans-
former 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. Units with one MCA value have one main terminal block. Units
with 2 MCA values require multiple conductors.
6. Use copper conductors only.
7. 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.
8. Units have the following power wiring terminal blocks and parallel
conductors:
VOLTAGE
TERMINAL
BLOCKS
OR NON-FUSED
DISCONNECTS
PARALLEL
CONDUCTORS
OR NON-FUSED
DISCONNECTS
208/230 26
460 13
575 13
380** 13
230 26
346†† 13
380/415 13
18