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SuperBlade® Power Cord Guide

At the current time, the Supermicro® SuperBlade® is shipping with power supplies of 2000 Watts or larger. In order to supply adequate power for the SuperBlade system, your site should provide 30 Amps of 220V (nominal) power for every pair of power supplies that are installed in your SuperBlade chassis.

Although the Power Distribution Unit (Figure 2) that is recommended by Supermicro supports up to four power connections, only two connections should be made to each PDU. The PDU has a Nema 6L connector plug that can plug into a Nema 6L socket (Figure 3). Each PDU, supporting two power supplies must be plugged into a separate circuit that provides 30 Amps of power and a voltage ranging from 200-240V.

Table 1 below illustrates the various Power Supplies offered by Supermicro.

Table 1 - Power Supply Amperage Draw

As this table illustrates, the 2000 Watt power supply can draw up to 11 Amps. So that for a single 30 Amp circuit supplying a PDU, no more than 2 power supplies may be connected to the PDU.

Supermicro SuperBlade® product includes power extension cords (see Figure 1). The power cord typically connects the power supply to a Power Distribution Unit (PDU – see Figure 2) in an IT room. The PDU should supply input voltage ranging from 200V to 240V AC. As stated above, the circuit that the PDU plugs into should provide 30 Amps that is not shared by any other device.

Figure 1 - IEC 60320 C19 to IEC 60320 C20 Extension Cord

Figure 2 - Power Distribution Unit (PDU) with NEMA L6-30P plug

Figure 3 - NEMA 6L-30 Plug & Socket

Before beginning receptacle installation, consider the following:

Observe all local electrical codes and practices.
Ensure that the AC power receptacle is wired to the site AC power via conductors routed through flexible metal conduit or via approved AC power cable before installation.
Ensure that AC power cord is properly sized, service rated, temperature rated, and complies with all applicable codes and regulations.
Ensure that the conductors in conduit are properly sized, service rated, temperature rated, color coded, and comply with all applicable codes and regulations.
Ensure that the AC power cord or conduit is long enough to reach from the site AC power junction box to a location within the distance required for the connection.
Ensure that the AC power cord or conduit is long enough to reach from the site AC power junction box to a location within the distance required for the connection.
Ensure that the number of power supplies connected to one circuit do not exceed the rated amperage of the circuit.

Please see Table 2 which lists some examples of international power cords thar are compatible with Supermicro.

[ View Table 2 ]

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