Table 7 — unit electrical data – Carrier 50BK User Manual
Page 14
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Table 6 — Maximum Wire Size for
Power Terminal Block*
VOLTS/PHASE
UNIT 50BJ.BK
016
024
028,034
044t
054,064t
208-230/3
2/0
2/0
350
350
500
460/3
2/0
2/0
2/0
350
350
575/3
2/0
2/0
2/0
350
350
*Select wire size per NEC and connect supply wires to factory-
supplied pigtail wire connectors
tMaximum wire size for 50BJ,BK044 units with alternate drive
package is 500 MCM
IMaximum wire size for 50BJ.BK054 units with standard drive
package is 350 MCM
Table 7 — Unit Electrical Data
UNIT
VOLTS/PH/HZ
VOLTAGE
RANGE
COMP #1
COMP #2
INDOOR
FAN MOTOR
POWER
SUPPLY
Min
Max
RLA
LRA
RLA
LRA
Hp
FLA
MCA*
MOCPt
208-230/3/60
187
254
50 0
191
—
—
3
9 2
71 7
110
50BJ016
460/3/60
414
508
22 1
86
—
_
3
4 6
32 2
50
575/3/60
518
632
17 9
69
—
—
3
3 7
26 2
40
208-230/3760 n
187
254
36 0
137
36 0
137
5
13 2
94 2
125
50BJ024
460/3/60
414
508
160
62
160
62
5
6 6
42 6
50
575/3/60
518
632
129
50
12 9
50
5
5 6
35 1
45
208-230/3/60
187
254
^ 49 3
191
35 7
137
T/2
22 0
М2У0
150
50BJ028
460/3/60
414
508
22 2
86
16 0
62
I'h
11 0
54 8
70
575/3/60
518
632
180
69
13 0
50
I'h
8 7
44 2
60
208-230/3/60
187
254
49 3
191
49 3
191
IVi
22 0
132 9
175
50BJ034
460/3/60
414
508
22 2
86
22 2
86
I'A
11 0
61 0
80
575/3/60
518
632
180
69
18 0
69
I'h
8 7
49 2
60
208/230/3/60
187
254
57 9
283
57 9
283
15
46 2
178 5
225
50BJ044
460/3/60
414
508
26 5
142
26 5
142
15
21 0
82 7
100
575/3/60
518
632
22 2
98
22 2
98
15
15 4
64 7
80
208/230/3/60
187
254
80 8
446
60 0
283
20
59 4
222 4
300
50BJ054
460/3/60
414
508
35 8
223
26 5
142
20
27 0
100 3
125
575/3/60
518
632
30 0
164
22 2
98
20
20 0
81 5
110
208/230/3/60
187
254
91 5
446
91 5
446
25
74 8
282 7
350
50BJ064
460/3/60
414
508
42 6
253
42 6
253
25
34 0
131 9
150
575/3/60
518
632
32 2
164
32 2
164
25
25 6
100 1
125
208-230/3/60
187
254
64 0
266
—
—
3
9 2
89 2
150
50BK016
460/3/60
414
508
29 0
120
—
_
3
4 6
40 9
60
575/3/60
518
632
23 0
96
—
—
3
3 7
32 5
50
208-230/3/60
187
254
45 0
170
45 0
170
5
13 2
114 5
150
50BK024
460/3/60
414
508
20 0
77
20 0
77
5
6 6
51 6
70
575/3/60
518
632
160
62
16 0
62
5
5 6
41 6
50
208-230/3/60
187
254
64 0
266
45 0
170
Th
22 0
147 4
200
50BK028
460/3/60
414
508
29 0
120
20 0
77
T/2
11 0
67 3
70
575/3/60
518
632
23 0
96
17 0
62
T/2
8 7
54 7
70
208-230/3/60
187
254
64 0
266
64 0
266
T/2
22 0
166 0
200
50BK034
460-3-60
414
508
29 0
120
29 0
120
I'h
11 0
76 3
100
575/3/60
518
632
23 0
96
23 0
96
I'h
8 7
60 5
80
208/230/3/60
187
254
77 2
345
77 2
345
15
46 2
221 9
250
50BK044
460/3/60
414
508
35 8
173
35 8
173
15
21 0
103 6
125
575/3/60
518
632
30 0
VO
30 0
120
15
15.4
84.9
110
208/230/3/60
187
254
101 5
446
77 2
345
20
59 4
265 5
350
50BK054
460/3/60
414
508
48 6
223
37 9
173
20
27 0
127 7
175
575/3/60
518
632
38 6
164
30 0
120
20
20 0
100 3
125
208/230/3/60
187
254
120 0
506
120 0
506
25
74 8
346 8
450
50BK064
460/3/60
414
508
56 5
253
56 5
253
25
34 0
163 2
200
575/3/60
518
632
42 9
176
42 9
176
25
25 6
124 2
150
FLA
— Full Load Amps
Hp
— Nominal Horsepower
LRA
— Locked Rotor Amps
MCA
— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection Device (amps)
RLA — Rated Load Amps
*Minimum circuit amps (MCA) for wire sizing complies with NEC Section
430-24
fin compliance with NEC requirements for multi motor and combination load
equipment (Ref NEC Articles 430 and 440), the overcurrent protective
device for the unit shall be fuse only
NOTES:
1 Compressor circuit breakers are current sensitive and temperature
compensated to ensure compressor cutoff if current draw becomes
excessive Breakers must be manually reset
Discharge gas thermal protection or internal protection with automatic
reset de-energizes the control circuit if extreme compressor motor
temperature should occur from excessive gas temperature or motor
overloading
Low- and high-pressure switches automatically shut off compressor(s)
if refrigerant pressure exceeds switch settings This action protects
against loss of charge
Indoor fan motor circuit breaker protects against motor overload Breaker
requires manual reset
The 50BJ,BK units are ETL listed at 208/230 and 460 v and C S A certi
fied at 575
V
Phase imbalance shall not exceed 2%
Wire sizing amps are a sum of 125% of the FLA for the largest motor plus
100% of FLA for all other motors in the unit
Maximum instantaneous current flow during starting is the sum of the
LRA for last compressor to start plus the FLA for all other compressors in
the unit
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