Disconnect - Carrier COBRA 48/50HJ004-014 Installation And Service

Table 1G — Electrical Data (COBRA™ Energy Recovery 48HJ008-014 Units with 62AQ300)
NOMINAL
UNIT
V-PH-Hz
208/230-3-60
48HJ008
460-3-60
208/230-3-60
48HJ009
460-3-60
208/230-3-60
48HJ012
460-3-60
208/230-3-60
48HJ014
460-3-60
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM — Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
UL — Underwriters' Laboratories
*Used to determine minimum disconnect per NEC.
†Single point box CRSINGLE017A00 is part of base unit.
NOTES:
1. In compliance with NEC requirements for multimotor and combi-
nation load equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker. UL, Canada units may be fuse or circuit breaker.
2. 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 percent of voltage imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
IFM CONV
TYPE OUTLET
STD NO
STD YES
HIGH STATIC NO
HIGH STATIC YES
STD NO
STD YES
HIGH STATIC NO
HIGH STATIC YES
STD NO
STD YES
HIGH STATIC NO
HIGH STATIC YES
STD NO
STD YES
HIGH STATIC NO
HIGH STATIC YES
STD NO
STD YES
HIGH STATIC NO
HIGH STATIC YES
STD NO
STD YES
HIGH STATIC NO
HIGH STATIC YES
STD NO
STD YES
STD NO
STD YES
POWER SUPPLY
62AQ
FUSE OR
FLA
MCA
HACR BKR
29.8 68.0
29.8 74.0
29.8 71.1
29.8 77.1
15.8 35.0
15.8 37.7
15.8 36.4
15.8 39.1
29.8 70.0
29.8 76.0
29.8 73.1
29.8 79.1
15.8 37.3
15.8 40.0
15.8 38.7
15.8 41.4
29.8 82.8
29.8 88.8 100
29.8 87.2 100
29.8 93.2 100
15.8 40.7
15.8 43.4
15.8 43.3
15.8 46.0
29.8
90.4 100
29.8 96.4 100
15.8 44.9
15.8 47.6
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
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.
% Voltage Imbalance = 100 x
= 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.
24
DISCONNECT SIZE*
FLA
80 75
80 80
80 78
80 84
40 38
40 41
40 40
45 43
80 77
80 82
80 80
80 86
40 41
45 43
45 42
45 45
90 90
96
95
101
45 44
45 47
50 47
50 50
98
104
50 49
50 51
452 + 464 + 455
3
1371
=
3
= 457
7
457
LRA
420
425
445
449
211
213
224
226
454
459
479
483
233
235
246
248
519
523
542
547
261
263
272
274
604
609
297
299