Carrier 38AKS028-044 dimensions Ð Electrical Data

Power Supply Ð Electrical characteristics of available power supply must agree with unit nameplate rating. Supply voltage must be within limits shown in Table 3.

IMPORTANT: Operating unit on improper supply volt- age, or with excessive phase imbalance, constitutes abuse and may affect Carrier warranty. See Unbalanced 3-Phase Supply Voltage, page 7.

Power Wiring Ð All power wiring must comply with applicable local and national codes. Install ®eld-supplied branch circuit fused disconnect(s) per NEC (National Electrical Code, U.S.A.) of a type that can be locked OFF or OPEN. Dis- connect(s) must be within sight from and readily accessible from unit in compliance with NEC Article 440-14.

GENERAL WIRING NOTES

1.A crankcase heater is wired in the control circuit so it is always operable as long as power supply disconnect is on, even if any safety device is open or unit stop-start switch is off. It is protected by a 5-amp circuit breaker in control power.

2.The power circuit ®eld supply disconnect should never be open except when unit is being serviced or is to be down for a prolonged period. When operation is resumed, crank- case heater should be energized for 24 hours before start- up. If unit is to be shut down for a prolonged period, it is recommended that the suction and discharge valves be

closed to prevent an excessive accumulation of refriger- ant in the compressor oil.

3.Power entry is one end only.

4.Maximum ®eld wire sizes allowed by lugs on terminal block are:

UNIT	V-Ph-Hz	WIRE
38AKS		SIZE*
028	208/230-3-60
034	208/230-3-60
	230-3-50	350 kcmil
044	208/230-3-60
	230-3-50
LEGEND

AWG Ð American Wire Gage kcmil Ð Thousand Circular Mils

*All other units use 2/0 AWG (67.4 mm2).

5.Terminals for ®eld power supply are suitable for copper, copper-clad aluminum, or aluminum conductors. Insula- tion must be rated 167 F (75 C) minimum.

CONDENSER FANS Ð The fans must rotate counterclock- wise when viewed from above. If necessary, correct direc- tion of fan rotation by interchanging any 2 power input wires at disconnect switch. Affix crankcase heater decal (located in installer's packet) to unit disconnect switch.

Table 3 Ð Electrical Data

60 HZ

	UNIT				UNIT					COMPRESSOR		FAN MOTORS
			Volts	Supplied*				MOCP
38AKS						MCA			ICF	RLA	LRA	FLA (ea)	Qty
			3 Ph, 60 Hz	Min.	Max.			(Fuse)
		500	208/230	187	254	124.6		200	452.2	89.8	446	6.2	2
028		200	380	342	418	64.7		110	250.9	45.5	247	3.9	2
		600	460	414	508	60.7		100	226.1	43.6	223	3.1	2
		100	575	518	632	52.5		80	167.4	36.5	164	3.4	2
		500	208/230	187	254	145.5		250	512.2	106.5	506	6.2	2
034		200	380	342	418	72.5		125	283.9	52.6	280	3.9	2
		600	460	414	508	68.7		110	256.1	50.0	253	3.1	2
		100	575	518	632	54.9		90	179.4	38.5	176	3.4	2
		500	230	187	254	203.0		350	702.4	147.5	690	6.2	3
044		200	380	342	418	111.1		175	389.8	79.5	382	3.9	3
		600	460	414	508	91.0		150	351.2	65.4	345	3.1	3
		100	575	518	632	81.5		125	282.8	57.1	276	3.4	3
							50 HZ
	UNIT				UNIT					COMPRESSOR		FAN MOTORS
			Volts	Supplied*				MOCP
38AKS						MCA			ICF	RLA	LRA	FLA (ea)	Qty
			3 Ph, 50 Hz	Min.	Max.			(Fuse)
		800	230	198	254	109.0		175	348.4	76.9	342	6.4	2
028		300	346	311	380	64.9		100	263.4	44.9	259	4.4	2
		900	400	342	400	60.5		100	226.0	43.6	223	3.0	2
		800	230	198	254	120.2		200	372.4	85.9	366	6.4	2
034		300	346	311	380	76.1		125	298.4	53.9	294	4.4	2
		900	400	342	400	68.5		110	256.0	50.0	253	3.0	2
		800	230	198	254	150.6		250	557.8	105.1	545	6.4	3
044		300	346	311	380	112.6		175	408.8	79.5	400	4.4	3
		900	400	342	400	90.8		150	351.0	65.4	345	3.0	3

	LEGEND
CSA	Ð Canadian Standards Association
FLA	Ð Full Load Amps
ICF	Ð Maximum Instantaneous Current Flow during starting (the point
	in the starting sequence where the sum of the LRA for the start-
	ing compressor, plus the total FLA for all running fan motors is
	maximum).
LRA	Ð Locked Rotor Amps
MCA	Ð Minimum Circuit Amps (complies with National

	Electrical Code [NEC, U.S.A.], Section 430-24)
MOCP Ð Maximum Overcurrent Protection
RLA	Ð Rated Load Amps
UL	Ð Underwriters' Laboratories

*Units are suitable for use on electrical systems where voltage sup- plied to unit terminals is not below or above listed minimum and maxi- mum limits.

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