Sun Microsystems SUN FIRE 280R Owner's Manual page 45

To attach a strain relief, wrap the loose end of the tie-wrap around the AC power
cord and thread the tie-wrap through the opening in the relief pedestal.
Pull the end to tighten the tie-wrap.
Note – Each outlet must connect the system to a 15A circuit for North America and
Japan, and to a 10A circuit for Europe. See your local electrical codes.
Note – If your server includes a second power supply, connect the second AC
power cord to the left inlet labeled (2). You may connect the second power supply to
the same AC circuit as the first supply. However, for increased system redundancy
connect each power supply to a separate circuit.
Chapter 2 System Setup 17