Trane IntelliPak SCWG 020, SCWG 025, SCWG 030, SCWG 035, SWG 020, SWG 025, SWG 030, SWG 035, SCRG 020, SCRG 025, SCRG 032, SRG 020, SC Installation Manual page 38

Selection Procedures
RLA = Rated Load Amps
Compressor LRA = Locked Rotor Amps
Fan Motor LRA = Locked Rotor Amps,
N.E.C. Table 430 - 150
FLA = Full Load Amps, N.E.C.
Table 430 - 150
Voltage utilization range is ±10 percent
Determination of minimum circuit
ampacity (MCA).
MCA = 1.25 x largest motor amps/VFD
amps (FLA or RLA) + the sum of the
remaining motor amps.
Determination of maximum fuse size
(MFS) and maximum circuit breaker size
(MCB).
MFS and MCB = 2.25 x largest motor
amps (FLA or RLA) + the sum of the
remaining motor amps.
If the rating value determined does not
equal a standard current rating of over
current protective device, use the next
lower standard rating for the marked
maximum rating.
For units with the dual power option,
there are two circuits that need calcula-
tions using the formulas above:
circuit #1 - fans
circuit #2 - compressors
If the rating value determined does not
equal a standard current rating of over
current protective device, use the next
lower standard rating for the marked
maximum rating.
38
Installation
Table I-ER-1. Number of Compressors per Unit
SCWG/SIWG 20 25
SCRG/SIRG 20
10 HP 2 2
15 HP - -
Table I-ER-2. SCWG/SIWG Compressor Motor Data
200V
HP RLA LRA
10 33.1 269
15 46.9 409
Table I-ER-3. SCRG/SIRG Compressor Motor Data
200V
HP RLA LRA
10 38.4 269
15 55.0 409
Table I-ER-4. Fan without VFD
200V
HP FLA LRA
5 16.1 105
7.5 25.0 152
10 32.9 193
15 44.8 290
20 61.0 373
25 74.0 469
Table I-ER-5. Fan with VFD
200V
HP FLA
7.5 29.0
10 38.3
15 42.7
20 55.2
25 67.8
Table I-ER-6. Electric Heat - Single Stage
SCWG/SIWG SCRG/SIRG
Size Size
20 20
25 25
30 -
- 32
35 -
Note:
Electric heat amperage should not be considered when determining minimum circuit ampacity. The current of the
unit in the heating mode will not exceed the current of the unit in the cooling mode.
Electrical
Requirements
30 35
25 32
1 -
1 2
460V 575V
RLA LRA RLA
14.4 117 11.5
20.4 178 16.4
460V 575V
RLA LRA RLA
16.7 117 13.4
24.1 178 19.1
460V 575V
FLA LRA FLA
6.7 46 5.4
10.8 66 8.2
14.2 84 11.4
20.3 126 16.2
25.0 162 20.0
31.0 204 24.2
460V
LRA FLA LRA
152 14.3 66
193 18.2 84
290 25.3 126
373 32.0 162
469 32.7 204
Heat 200V
Kw Amps
16 44.8
20 55.6
24 66.8
26 72.4
28 78
LRA
94
143
LRA
94
143
LRA
37
54
66
102
132
162
460V
Amps
19.6
24.2
29.0
31.6
34.0
SCXG-SVX01B-EN