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

Table 4A Ð Unit Electrical Data, 30HXC Units* (cont)

	VOLTAGE				POWER CIRCUIT			CONTROL CIRCUIT				ICF
UNIT		Supplied
30HXC	Nameplate					Recommended	Voltage
	(3 Ph)	Min	Max	MCA	MOCP		(Single	Min	Max	MCA	MOCP	WD	XL
						Fuse Size
							Ph)
	208/230-60	187	253	285/197	500/350	350/250	115-60	104	127			591	²
	460-60	414	506	200	300	250	115-60	104	127			287	756
161	575-60	518	633	160	225	200	115-60	104	127			230	605
	380-60	342	418	242	350	300	230-60	207	254	15	15	325	843
	230-50	207	253	266/182	450/300	350/225	230-50	198	254			578	²
	346-50	325	380	273	400	350	230-50	198	254			394	²
	380/415-50	342	440	249	350	300	230-50	198	254			358	944
	208/230-60	187	253	238/285	400/500	300/400	115-60	104	127			624	²
	460-60	414	506	215	300	250	115-60	104	127			302	771
171	575-60	518	633	172	250	200	115-60	104	127			242	617
	380-60	342	418	260	350	300	230-60	207	254	15	15	343	861
	230-50	207	253	219/266	350/450	300/350	230-50	198	254			607	²
	346-50	325	380	145/176	250/300	175/225	230-50	198	254			413	²
	380/415-50	342	440	267	350	300	230-50	198	254			376	962
	208/230-60	187	253	285/285	500/500	400/400	115-60	104	127			661	²
	460-60	414	506	232	300	300	115-60	104	127			319	788
186	575-60	518	633	185	250	225	115-60	104	127			255	630
	380-60	342	418	156/156	250/250	200/200	230-60	207	254	15	15	364	882
	230-50	207	253	266/266	450/450	350/350	230-50	198	254			645	²
	346-50	325	380	176/176	300/300	225/225	230-50	198	254			438	²
	380/415-50	342	440	289	400	350	230-50	198	254			399	985

	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 30HXC171 and 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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