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Electrical Installation
Table 4 | Current |
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UPS Rating |
| Maximum Battery | External Breaker | ||
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kVA |
| kW | Nominal VDC | Current at EOD | Trip, Amps |
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250 |
| 225 | 480 | 615 | 700 |
300 |
| 270 | 480 | 737 | 800 |
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400 |
| 360 | 480 | 981 | 1000 |
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Notes on Tables
1.Nominal input current (considered continuous) is based on
2.Recommended bypass external overcurrent protection is based on 125% overload capacity for 10 minutes.
3.All recommended external overcurrent protections are based on 80% rated breakers.
4.Nominal battery voltage is shown at 2.0 volts / cell.
Table 5 Recommended conduit and cable sizes
Rectifier Input
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| Voltage |
| Nominal Selection | Alternate Selection | ||
UPS Rating |
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| Top Cable Entry Input | Bottom Cable Entry | Top Cable Entry Input | Bottom Cable Entry | ||
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| Wire & Conduit | Input Wire & Conduit | Wire & Conduit | Input Wire & Conduit |
kVA | kW | Input |
| Bypass | Output | Ph, G THW / FMC | Ph, G THW / RNC | Ph, G THW / FMC | Ph, G THW / RNC |
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250 | 225 | 480 |
| 480 | 480 | (2) 2.5C | (2) 2.5C | (3) 2C | (3) 2C |
| #1/0AWG | #1/0AWG | #1/0AWG | #1/0AWG | |||||
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300 | 270 | 480 |
| 480 | 480 | (2) 3C | (2) 3C | (3) 2.5C | (3) 2.5C |
| #1/0AWG | #1/0AWG | #1/0AWG | #1/0AWG | |||||
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400 | 360 | 480 |
| 480 | 480 | (2) 3C | (2) 3.5C | (3) 2.5C | (3) 2.5C |
| #1/0AWG | #1/0AWG | #1/0AWG | #1/0AWG | |||||
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Bypass Input |
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| Nominal Selection | Alternate Selection | ||
UPS Rating |
| Voltage (VAC) |
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| Top Cable Entry Input | Bottom Cable Entry | Top Cable Entry Input | Bottom Cable Entry | |||||
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| Wire & Conduit | Input Wire & Conduit | Wire & Conduit | Input Wire & Conduit |
kVA | kW | Input |
| Bypass | Output | Ph, N, G THW / FMC | Ph, N, G THW / RNC | Ph, N, G THW / FMC | Ph, N, G THW / RNC |
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250 | 225 | 480 |
| 480 | 480 | (3) 2.5C | (3) 3C | (2) 3C | (2) 3C |
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300 | 270 | 480 |
| 480 | 480 | (3) 2.5C | (3) 3C | (2) 3C | (2) 3.5C |
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400 | 360 | 480 |
| 480 | 480 | (3) 3C | (3) 3C | (2) 3.5C | (2) 4C |
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Output |
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| Nominal Selection | Alternate Selection | ||
UPS Rating |
| Voltage (VAC) |
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| Top Cable Entry Input | Bottom Cable Entry Input | Top Cable Entry Input | Bottom Cable Entry | |||||
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| Wire & Conduit | Wire & Conduit | Wire & Conduit | Input Wire & Conduit |
kVA | kW | Input |
| Bypass | Output | Ph, N, G THW / FMC | Ph, N, G THW / RNC | Ph, N, G THW / FMC | Ph, N, G THW / RNC |
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250 | 225 | 480 |
| 480 | 480 | (3) 2.5C | (3) 3C | (3) 2.5C | (3) 3C |
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300 | 270 | 480 |
| 480 | 480 | (3) 2.5C | (3) 3C | (3) 2.5C | (3) 3C |
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400 | 360 | 480 |
| 480 | 480 | (3) 3C | (3) 3C | (3) 3C | (3) 3C |
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Battery |
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| Nominal Selection | Alternate Selection | ||
UPS Rating |
| Voltage (VAC) |
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| Top Cable Entry Input | Bottom Cable Entry Input | Top Cable Entry Input | Bottom Cable Entry Input | |||||
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| Wire & Conduit | Wire & Conduit | Wire & Conduit | Wire & Conduit |
kVA | kW | Input |
| Bypass | Output | Wires, G THW / FMC | Wires, G THW / RNC | Wires, G THW / FMC | Wires, G THW / RNC |
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250 | 225 | 480 |
| 480 | 480 | (2) 2.5C | (2) 2.5C | (3) 2C | (3) 2C |
| #1/0AWG | #1/0AWG | #1/0AWG | #1/0AWG | |||||
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300 | 270 | 480 |
| 480 | 480 | (2) 2.5C | (2) 3C | (3) 2C | (3) 2C |
| #1/0AWG | #1/0AWG | #1/0AWG | #1/0AWG | |||||
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400 | 360 | 480 |
| 480 | 480 | (3) 2.5C | (3) 3C | (4) 2C | (4) 2.5C |
| #4/0AWG | #4/0AWG | #4/0AWG | #4/0AWG | |||||
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If the UPS is used in a
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