Preparing the Electrical Circuits

In planning where to place your equipment, remember that each of the following items requires access (by way of a separate power cord) to a power outlet:

• Sun Enterprise 6500/5500/4500 system

• External peripherals

• Monitor used for diagnostics

Enterprise 6500/5500 Cabinet Systems

The 16-slot and 8-slot system cabinets require a 30A circuit and a detachable cable.

The equipment relies on the protective device in the building installation; thus it requires a 30A circuit breaker.

Do not attach other electrical equipment to the server AC circuit; server reliability may be affected.

If the appropriate electrical receptacle is not available in your country, the plug may be removed from the cord. The cord can then be permanently connected to a dedicated branch circuit by a qualified electrician. Check local electrical codes for proper installation requirements.

The system cabinet has a high leakage current to ground. Strictly observe the following instructions to reduce the risk of electric shock.

The system requires an electrical circuit that is grounded to earth. The UL1950, CSA950, and EN60950 specify:"An insulated earthing conductor that is identical in size, insulation material, and thickness to the earthed and unearthed branch-circuit supply conductors, except that it is green with or without one or more yellow stripes, is to be installed as part of the branch circuit that supplies the unit or system. The earthing conductor described is to be connected to earth at the service equipment or, if supplied by a separately derived system, at the supply transformer or motor-generator set.""The attachment-plug receptacles in the vicinity of the unit or system are all to be of an earthing type, and the earthing conductors serving these receptacles are to be connected to earth at the service equipment.""(Information Technology Equipment -- UL 1950, copyright 1989, 1991 by Underwriters Laboratories, Inc.)"

The power cord provides a ground path that will protect the drives and boards in the cabinet from static electricity damage.

Do not make mechanical or electrical modifications to the server cabinet. Sun Microsystems\256 is not responsible for the regulatory compliance if the cabinet is modified.

Enterprise 4500 System

The 8-slot Enterprise 4500 system uses nominal input voltages of 100-120 VAC or 200-240 VAC. Sun products are designed to work with single-phase power systems having a grounded neutral conductor.

To reduce the risk of electrical shock, do not plug Sun products into another type of power source. Contact your facilities manager or a qualified electrician if you are unsure what type of power is supplied to your building.