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High Voltage Power Installation

This section should be started ONLY AFTER all previous installation steps have been completed.

Installation of 480V power should be performed by a qualified electrician only. Each rack requires a 250A, 480V, 3 phase power circuit for an estimated 195A peak draw. Power drop locations are the same for each rack and shown in the image below.

Figure 19: 480V Power Drop Location on Rack

Electrical Drop Locations​

3-Rack System – Panel Locations – For Reference Only

Figure 20: Power Drop Locations

Electrical Connections​

  • The HV panels come standard with a 2” knockout (and conduit fitting), as shown in Figure 19. This hole can be enlarged as necessary if using a hole punch.

  • The connections of the 4 conductors inside of the panel are shown in Figure 21 below. Torque the 3 phase conductors to the torque listed on the main breaker.

  • If hard conduit is to be run ahead of the racks being installed, it is recommended to install flexible conduit for the last 2-3ft to allow for installation variance in the final location of the racks.

Figure 21: HV Panel Supply Connections

Electrical Panel Specifications​

Table 1: Rack HV Panel Specifications

Table 1: Rack HV Panel Specifications
Supply Voltage480-VAC-Wye w/ Ground
Supply FLA250A
Supply Largest Protective Device:250A
Phase3~Wye
Frequency50/60Hz
Environment Type RatingUL Enclosed Type 12
Short Circuit Current Rating35kAIC RMS Symmetrical<br>600 VAC Maximum