Carrier HXC076-186 installation instructions B Ð Unit Electrical Data, 30HXA Units* cont

Table 4B Ð Unit Electrical Data, 30HXA Units* (cont)

	VOLTAGE				POWER CIRCUIT			CONTROL CIRCUIT				ICF
UNIT		Supplied
30HXA	Nameplate					Recommended	Voltage
	(3 Ph)	Min	Max	MCA	MOCP		(Single	Min	Max	MCA	MOCP	WD	XL
						Fuse Size
							Ph)
	208/230-60	187	253	437/295	700/500	600/400	115-60	104	127			979	²
	460-60	414	506	304	450	350	115-60	104	127			478	1282
161	575-60	518	633	243	350	300	115-60	104	127			382	1025
	380-60	342	418	368	500	450	230-60	207	254	15	15	539	1428
	230-50	207	253	415/275	700/450	500/350	230-50	198	254			858	²
	346-50	325	380	276/183	450/300	350/225	230-50	198	254			535	²
	380/415-50	342	440	385	500	450	230-50	198	254			533	1398
	208/230-60	187	253	359/437	600/700	450/600	115-60	104	127			1030	²
	460-60	414	506	327	450	400	115-60	104	127			501	1305
171	575-60	518	633	261	350	300	115-60	104	127			401	1044
	380-60	342	418	396	500	450	230-60	207	254	15	15	567	1456
	230-50	207	253	334/415	600/700	450/500	230-50	198	254			905	²
	346-50	325	380	222/276	350/450	300/350	230-50	198	254			616	²
	380/415-50	342	440	413	600	500	230-50	198	254			562	1427
	208/230-60	187	253	437/437	700/700	600/600	115-60	104	127			1093	²
	460-60	414	506	355	500	400	115-60	104	127			529	1333
186	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	15	15	601	1490
	230-50	207	253	415/415	700/700	500/500	230-50	198	254			970	²
	346-50	325	380	276/276	450/450	350/350	230-50	198	254			660	²
	380/415-50	342	440	453	600	600	230-50	198	254			601	1466

	LEGEND
ICF	Ð 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	Ð Minimum Circuit Ampacity (for wire sizing)
MOCP Ð Maximum Overcurrent Protection
RLA	Ð Rated Load Amps
WD	Ð Wye-Delta Start
XL	Ð Across-the-Line Start

*Refer to Carrier's electronic catalog for the most current electrical data.

²Wye-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.

²²The 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 ®eld-supplied fused electri- cal service with a (factory- or ®eld-installed) disconnect located in sight from the unit.

2.Control circuit power must be supplied from a separate source through a ®eld-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:

	TERMINAL	PARALLEL
VOLTAGE	BLOCKS	CONDUCTORS
	OR NON-FUSED	OR NON-FUSED
	DISCONNECTS	DISCONNECTS
208/230	2	6
460	1	3
575	1	3
380**	1	3
230	2	6
346²²	1	3
380/415	1	3

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