Table 8A — Electrical Data — 48AJ,AK,AW,AY Units without Convenience Outlet (cont)
UNIT | VOLTAGE | VOLTAGE |
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| CONDENSER | EVAPORATOR | POWER | POWER SUPPLY | ||||||||
SIZE | RANGE | Cir A, No. 1 | Cir A, No. 2 | Cir B, No. 1 | Cir B, No. 2 | FAN MOTOR | FAN MOTOR | EXHAUST | |||||||||||||
3 PH, 60 Hz |
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48A |
| Min | Max | RLA | LRA | RLA |
| LRA | RLA |
| LRA | RLA | LRA | Qty | FLA | Hp | FLA | FLA (total) | MCA | MOCP* | |
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| 20 | 59.4 | — | 250.5 | 300 | |
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| 35.4 | 285.9 | 300 | |||
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| 25 | 74.8 | — | 269.7 | 300 | |
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| 6.5 | 35.4 | 305.1 | 350 | |||
| 208 | 187 | 229 | 34.3 | 265 | 34.3 |
| 265 | 34.3 |
| 265 | 34.3 | 265 | 6 |
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| (ea) | 30 | 88 | — | 286.2 | 350 | |||||||||||||
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| 35.4 | 321.6 | 400 | |||
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| 40 | 114 | — | 318.7 | 400 | |
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| 35.4 | 354.1 | 450 | |||
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| 20 | 54 | — | 244.3 | 250 | |
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| 35.4 | 279.7 | 300 | |||
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| 25 | 68 | — | 261.8 | 300 | |
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| 6.6 | 35.4 | 297.2 | 350 | |||
| 230 | 207 | 253 | 34.3 | 265 | 34.3 |
| 265 | 34.3 |
| 265 | 34.3 | 265 | 6 |
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| (ea) | 30 | 80 | — | 276.8 | 350 | |||||||||||||
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| 35.4 | 312.2 | 350 | |||
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| 40 | 104 | — | 306.8 | 400 | |
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| 35.4 | 342.2 | 400 | |||
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| 20 | 27 | — | 117.6 | 125 | ||
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| 18.9 | 136.5 | 150 | |||
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| 25 | 34 | — | 126.3 | 150 | |
| 460 | 414 | 508 | 16 | 120 | 16 |
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| 120 | 16 | 120 | 6 | 3.3 | 18.9 | 145.2 | 175 | |||
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| (ea) | 30 | 40 | — | 133.8 | 150 | |||||||||||||
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| 18.9 | 152.7 | 175 | |||
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| 40 | 52 | — | 148.8 | 200 | |
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| 18.9 | 167.7 | 200 | |||
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| 20 | 22 | — | 94.7 | 110 | |
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| 14.4 | 109.1 | 125 | |||
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| 25 | 27 | — | 101.0 | 125 | |
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| 2.6 | 14.4 | 115.4 | 125 | |||
| 575 | 518 | 632 | 12.9 | 80 | 12.9 |
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| 80 | 12.9 | 80 | 6 |
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| (ea) | 30 | 32 | — | 107.2 | 125 | |||||||||||||
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| 14.4 | 121.6 | 150 | |||
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| 40 | 41 | — | 118.5 | 150 | |
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| 14.4 | 132.9 | 150 | |||
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| 25 | 75.0 | — | 308.1 | 350 | |
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| 35.4 | 343.5 | 400 | |||
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| 208 | 187 | 229 | 40.8 | 265 | 47 |
| 380 | 40.8 |
| 265 | 47 | 380 | 6 | 6.5 | 30 | 88.0 | — | 324.6 | 400 | |
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| (ea) | 35.4 | 360.0 | 400 | |||||||||||||||
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| 40 | 114.0 | — | 357.1 | 450 | |
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| 35.4 | 392.5 | 450 | |||
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| 25 | 68.0 | — | 300.2 | 350 | |
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| 35.4 | 335.6 | 350 | |||
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| 230 | 207 | 253 | 40.8 | 265 | 47 |
| 380 | 40.8 |
| 265 | 47 | 380 | 6 | 6.6 | 30 | 80.0 | — | 315.2 | 350 | |
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| (ea) | 35.4 | 350.6 | 400 | |||||||||||||||
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| 40 | 104.0 | — | 345.2 | 400 | |
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| 35.4 | 380.6 | 450 | |||
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| 25 | 34.0 | — | 147.5 | 175 | ||
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| 18.9 | 166.4 | 175 | |||
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| 460 | 414 | 508 | 20.2 | 135 | 22.4 |
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| 135 | 22.4 | 175 | 6 | 3.3 | 30 | 40.0 | — | 155.0 | 175 | |
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| (ea) | 18.9 | 173.9 | 200 | |||||||||||||||
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| 40 | 52.0 | — | 170.0 | 200 | |
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| 18.9 | 188.9 | 225 | |||
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| 25 | 27.0 | — | 119.8 | 125 | |
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| 18.9 | 138.7 | 150 | |||
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| 575 | 518 | 632 | 16.6 | 120 | 18.6 |
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| 120 | 18.6 | 140 | 6 | 2.6 | 30 | 32.0 | — | 126.0 | 150 | |
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| (ea) | 18.9 | 144.9 | 175 | |||||||||||||||
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| 40 | 41.0 | — | 137.3 | 175 | |
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| 18.9 | 156.2 | 175 | |||
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LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection NEC — National Electrical Code
RLA — Rated Load Amps
*Fuse or HACR circuit breaker per NEC.
NOTES:
1.In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. The Canadian units may be fuse or circuit breaker.
2.Unbalanced
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent of voltage imbalance.
% Voltage imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Example: Supply voltage is
BC = 464 v AC = 455 v
452 + 464 + 455
Average Voltage =
3
= 1371 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.
% Voltage Imbalance = 100 x | 7 |
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= 1.53%
This amount of phase imbalance is satisfactory as it is below the max- imum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.
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