Facility Power Requirements

Electrical work and installations must comply with applicable local, state, or national electrical codes. Contact your facilities manager or qualified electrician to determine what type of power is supplied to the building.

To prevent catastrophic failures, design the input power sources to ensure that adequate power is provided to the PDUs.

In the United States and Canada, ensure that the overall system AC input current load does not exceed 80 percent of the branch circuit AC current rating.

When planning for power distribution requirements, balance the power load between available AC supply branch circuits.

The installation site AC power receptacle must be within 6.6 feet (2 m) of the rack.

Circuit Breaker Requirements

Provide dedicated AC breaker panels for all power circuits that supply power to the storage and expansion racks.

In addition to circuit breakers, provide a stable power source, such as a UPS, to reduce the possibility of component failures. If computer equipment is subjected to repeated power interruptions and fluctuations, then it is susceptible to a higher rate of component failure.

Grounding Guidelines

Electrical circuits must be grounded to the earth.

The storage and expansion racks are shipped with grounding-type power cords. Always connect the cords to grounded power outlets. Because different grounding methods are used, depending on location, check the grounding type. Also refer to documentation, such as IEC documents, for the correct grounding method. Ensure that the facility administrator or qualified electrical engineer verifies the grounding method for the building, and performs the grounding work.

Related Information

• PDU Power Specifications