Carrier 48SS manual Electrical data

Electrical data

		VOLTAGE				COND	INDOOR			AWG 60 C	MAX WIRE
UNIT				COMPRESSOR		FAN		POWER SUPPLY
	V-PH-HZ	RANGE					FAN			MIN WIRE	LENGTH
48SS						MOTOR
										SIZE²	(ft)
		Min	Max	RLA	LRA	FLA	FLA	MCA	MOCP*
018	208/230-1-60	187	253	7.6	45	0.7	1.8	12.0	15	14	75
024	208/230-1-60	187	253	12.4	61	0.7	2.0	18.2	30	12	80
030	208/230-1-60	187	253	14.4	82	1.4	2.0	21.8	30	10	100
	208/230-3-60	187	253	9.4	66	1.4	2.0	15.5	25	12	80
	208/230-1-60	187	253	18.0	96	1.4	2.8	26.7	40	10	90
036	208/230-3-60	187	253	11.7	75	1.4	2.8	18.8	30	12	65
	460-3-60	414	506	5.6	40	0.8	1.4	9.2	10	14	100
	208/230-1-60	187	253	20.4	104	1.4	4.0	30.9	50	8	100
042	208/230-3-60	187	253	14.0	91	1.4	4.0	22.9	35	10	85
	460-3-60	414	506	6.4	42	0.8	2.0	10.8	15	14	100
	208/230-1-60	187	253	26.4	129	2.1	5.0	40.1	60	6	100
048	208/230-3-60	187	253	15.0	99	2.1	5.0	25.9	40	10	75
	460-3-60	414	506	8.2	50	1.1	2.3	13.7	20	14	100
	208/230-1-60	187	253	32.1	169	2.1	6.8	49.0	60	6	100
060	208/230-3-60	187	253	19.3	123	2.1	6.8	33.0	50	8	90
	460-3-60	414	506	10.0	62	1.1	3.2	16.8	25	12	100

LEGEND

EXAMPLE: Supply voltage is 460-3-60.

AWG	Ð American Wire Gage
CSA	Ð CanadianStandards Association
FLA	Ð Full Load Amps
HACR	Ð Heating, Air Conditioning and
	Refrigeration
LRA	Ð Locked Rotor Amps

AB = 452 v

BC = 464 v

AC = 455 v

Average Voltage =

452 + 464 + 455

3

1371

MCA	Ð Minimum Circuit Amps
MOCP Ð Maximum Overcurrent Protection
	(fuses or HACR-type circuit breaker)
NEC	Ð National Electrical Code
RLA	Ð Rated Load Amps

*Fuse or HACR breaker.

²Minimum wire size is based on 60 C copper wire. If other than 60 C if used, determine size from NEC. Voltage drop of wire must be less than 2% of rated voltage.

=

3 = 457

Determine maximum deviation from average voltage. (AB) 457 ± 452 = 5 v

(BC) 464 ± 457 = 7 v

(AC) 457 ± 455 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

NOTES:

1. In compliance with NEC requirements for multimotor and combina-

% Voltage Imbalance = 100 x

7

tion load equipment (refer to NEC Articles 430 and 440), the over-

current protective device for the unit shall be fuse or HACR breaker.

The CSA units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is

greater than 2%. Use the following formula to determine the percent-

age of voltage imbalance.

% Voltage Imbalance

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.

= 100 x

max voltage deviation from average voltage

average voltage

24