Carrier 48SS018-060, 48SX024-060 user manual B Ð Electrical Data Ð Unit 48SX

Table 4B Ð Electrical Data Ð Unit 48SX

UNIT		VOLTAGE		COMPRESSOR		OUTDOOR-FAN	INDOOR-FAN	POWER SUPPLY		AWG 60 C	MAX WIRE
SIZE	V-PH-Hz	RANGE				MOTOR	MOTOR			MIN WIRE
											LENGTH (ft)
48SX		Min	Max	RLA	LRA	FLA	FLA	MCA	MOCP*	SIZE
024	208/230-1-60	187	253	12.9	62.5	1.4	2.0	19.5	30	12	75
030	208/230-1-60	187	253	15.0	76.0	1.4	2.6	22.8	30	10	100
	208/230-1-60	187	253	16.7	95.0	1.4	2.8	25.1	30	10	95
036	208/230-3-60	187	253	10.9	75.0	1.4	2.8	17.8	25	12	70
	460-3-60	414	506	5.4	40.0	0.8	1.4	9.0	10	14	100
	208/230-1-60	187	253	20.0	104.0	1.4	3.1	29.5	45	10	80
042	208/230-3-60	187	253	13.9	88.0	1.4	3.1	21.9	30	10	60
	460-3-60	414	506	6.8	44.0	0.8	1.6	10.9	15	14	100
	208/230-1-60	187	253	26.4	129.0	1.4	7.2	41.6	60	6	100
048	208/230-3-60	187	253	15.0	99.0	1.4	7.2	27.4	40	10	70
	460-3-60	414	506	8.2	49.5	0.8	2.3	13.4	20	14	100
060	208/230-1-60	187	253	32.1	169.0	2.1	7.2	49.4	60	6	100
	208/230-3-60	187	253	19.3	123.0	2.1	7.2	33.4	50	8	90

	LEGEND
AWG	Ð American Wire Gage
FLA	Ð Full Load Amps
HACR	Ð Heating, Air Conditioning and
	Refrigeration
LRA	Ð Locked Rotor Amps
MCA	Ð Minimum Circuit Amps
MOCP Ð Maximum Overcurrent Protection
RLA	Ð Rated Load Amps

*Fuse or HACR Breaker.

²Carrier Scroll Compressor. **Copeland Scroll Compressor.

NOTES:

1.In compliance with NEC (National Electrical Code) requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. The CGA (Canadian Gas As- sociation) units may be fuse or circuit breaker.

2.Minimum wire size is based on 60 C copper wire. If other than 60 C wire is used, or if length exceeds wire length in table, de- termine size from NEC.

3.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply volt- age is greater than 2%. Use the following formula to determine the percentage of voltage imbalance.

% Voltage imbalance

= 100 x	max voltage deviation from average voltage
	average voltage

Example: Supply voltage is 460-3-60.

AB = 452 v BC = 464 v AC = 455 v

Average Voltage = 452 1 464 1 455 3

= 1371

3

= 457

Determine maximum deviation from average voltage. (AB) 457 − 45 2 = 5 v

(BC) 464 − 45 7 = 7 v

(AC) 457 − 45 5 = 2 v Maximum deviation is 7 v.

Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x		7
	457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

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