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Step 4 — Make Electrical Connections
POWER SUPPLY — Electrical characteristics of available
power supply must agree with unit nameplate rating. Supply
voltage must be within the limits shown in Tables 10A or
10B, 11 and 12. See Table 13 for control circuit data and
Table 14 for fan motor electrical data.
IMPORTANT: Operation of unit on improper supply
voltage or with excessive phase imbalance constitutes
abuse and can affect any Carrier warranty.
FIELD POWER CONNECTIONS —All power wiring must
comply with applicable local and national codes. Install field-
supplied, branch circuit safety disconnect(s) of a type that
can be locked off/open. Disconnects must be located within
sight of, and readily accessible from, the unit in compliance
with NEC (National Electrical Code) (U.S.A. Standard)
Article 440-14.
All field power enters the unit through a hole in the con-
trol box shelf. Refer to Fig. 20-28 for field wiring details.
MAIN POWER — Units 38AH044-104 have single-point
power connection to simplify field-power wiring (all power
enters at one end). Units 38AH124 and 134 require 2 con-
nection points, one for each module. Units may use copper,
copper-clad aluminum, or aluminum conductors at all volt-
ages. The maximum wire size units can accept per terminal
block is 500 kcmil.
Power must be supplied as shown in Table 15.
CONTROL CIRCUIT WIRING — Control circuit wiring is
accomplished with a step-down transformer on voltage des-
ignations 500, 600, and 100 in table below where the pri-
mary voltage is field voltage. For 208/230-v, 3-ph, 60-Hz
units, ensure that the transformer primary is wired properly
for the voltage which will be applied.All control wiring must
comply with applicable local and national codes. The safety
circuits are 24 v on all units. The safety circuit voltage is
created with a step-down transformer where main control
voltage is the transformer primary voltage.
See Table 13 for control circuit information.
Table 10A — Electrical Data — 50/60 Hz (38AH044-084 Dual-Circuit Units)
STANDARD UNIT COMPRESSOR*
38AH
Voltage
Designation
Compressor
A1/B1
Model No.
Nameplate
V-Ph-Hz
Supply Voltage†
MCA MOCP ICF
A1 B1
Min Max RLA LRA RLA LRA
044
500
06E4250/250
208/230-3-60 187 254 179.4 225 434.7 67.9 345 67.9 345
600 460-3-60 414 508 91.3 100 218.6 34.6 173 34.6 173
100 575-3-60 518 632 78.4 100 162.4 28.8 120 28.8 120
200 380-3-60 342 418 93.5 125 241.2 34.6 191 34.6 191
800 (PW) 230-3-50 198 254 180.2 225 296.7 67.9 207 67.9 207
900 380/415-3-50 342 440 91.5 100 219.6 34.6 173 34.6 173
300 (PW) 346-3-50 325 367 100.0 125 165.9 33.3 115 33.3 115
054
500
06E4250/265
208/230-3-60 187 254 206.6 250 535.7 67.9 345 89.7 446
600 460-3-60 414 508 102.4 125 268.6 34.6 173 43.6 223
100 575-3-60 518 632 88.0 125 206.4 28.8 120 36.5 164
200 380-3-60 342 418 107.1 150 297.2 34.6 191 45.5 247
900 380/415-3-50 342 440 102.7 125 269.6 34.6 173 43.6 223
300 (PW) 346-3-50 325 367 107.0 150 198.9 33.3 115 44.9 148
064
500
06E8265/275
208/230-3-60 187 254 249.3 350 617.5 89.7 446 106.4 506
600 460-3-60 414 508 115.5 150 307.6 43.6 223 46.8 253
100 575-3-60 518 632 100.6 125 226.1 36.5 164 40.4 176
200 380-3-60 342 418 126.9 175 341.1 45.5 247 52.6 280
900 380/415-3-50 342 440 114.1 150 335.6 43.6 223 46.8 280
300 (PW) 346-3-50 325 367 129.8 175 230.5 44.9 148 53.8 168
074
500
06E8275/299
208/230-3-60 187 254 330.5 450 829.0 106.4 506 147.4 690
600 460-3-60 414 508 148.6 200 408.2 46.8 253 65.4 345
100 575-3-60 518 632 132.2 175 336.8 40.4 176 57.1 276
200 380-3-60 342 418 174.5 250 458.0 52.6 280 78.8 382
900 380/415-3-50 342 440 143.0 200 403.8 46.8 280 65.4 345
300 (PW) 346-3-50 325 367 170.8 250 300.4 53.8 168 79.5 229
084
500
06E8299/299
208/230-3-60 187 254 371.5 500 870.0 147.4 690 147.4 690
600 460-3-60 414 508 167.2 225 426.8 65.4 345 65.4 345
100 575-3-60 518 632 148.9 200 353.5 57.1 276 57.1 276
200 380-3-60 342 418 200.7 250 484.2 78.8 382 78.8 382
900 380/415-3-50 342 440 167.6 225 428.4 65.4 345 65.4 345
300 (PW) 346-3-50 325 367 205.3 250 334.9 79.5 229 79.5 229
See page 24 for Legend and Notes.
23