Become familiar with Oracle's safety information before installing any Oracle server or equipment:
Read the safety notices printed on the product packaging.
Read the Important Safety Information for Sun Hardware Systems (821-1590) document that is included with the rack.
Read all safety notices in the Sun Rack II Safety and Compliance Guide (820-4762) This guide is available at http://www.oracle.com/documentation.
Read all safety notices in the Sun Rack II Power Distribution Units Users Guide (820-4760). This guide is also available at http://www.oracle.com/documentation.
Read the safety labels that are on the equipment.