Wire Size Amps 1.8 3.5 0.9 1.8
Maximum Overcurrent
Protection Device, Amps
15 15 15 15
The Liebert Lee-Temp receiver requires a separate power feed for heaters. The condenser is not designed to supply power to the receiver heater
pads.
Table 4.2 Electrical data, Liebert Lee-Temp™ receiver, 60Hz (continued)
4.1.1 Wye- vs. Delta-Connected Power Supply
Figure 4.1 Wye- vs. delta-connected power supply connection diagram
NOTICE
Risk of improper input power. Can cause equipment damage.
The Liebert MC Condenser is designed to operate with Wye-connected power with a solidly grounded
neutral. It will not operate properly with Wye-connected power with high-resistance (or impedance)
ground or with delta-connected power. Refer to Wye- vs. Delta-Connected Power Supply above
NOTE: A separate neutral wire does not need to be run to the LiebertMC.
Acceptable Power Supplies—208V to 575V Nominal Units
• 208V Wye with solidly grounded neutral and 120V line-to-ground
• 380V Wye with solidly grounded neutral and 220V line-to-ground
• 480V Wye with solidly grounded neutral and 277V line-to-ground
• 575V Wye with solidly grounded neutral and 332V line-to-ground (uses step-down
tranformers)
Unacceptable Power Supplies—208V to 575V Nominal Units
• Wye with high-resistance (or impedance) ground
• Delta without ground or with floating ground
• Delta with corner ground
Vertiv | Liebert® MC™ Installer/User Guide | 42
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