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outlet, the safety ground conductor in the power cord provides proper grounding only for
the server. You must provide additional, proper grounding for the rack and other devices
installed in it.
Overcurrent protection: The server is designed for an AC line voltage source with up to 20
amperes of overcurrent protection per cord feed. If the power system for the equipment
rack is installed on a branch circuit with more than 20 amperes of protection, you must
provide supplemental protection for the server.
If DC power supplies are installed:
Connection with a DC (Direct Current) source should only be performed by trained
service personnel. The server with DC input is to be installed in a Restricted Access
Location in accordance with articles 110-16, 110-17, and 110-18 of the National Electric
Code, ANSI/NFPA 70. The DC source must be electrically isolated by double or
reinforced insulation from any hazardous AC source.
Main DC power disconnect: You are responsible for installing a properly rated DC power
disconnect for the server system. This mains disconnect must be readily accessible, and it
must be labeled as controlling power to the server. The circuit breaker of a centralized DC
power system may be used as a disconnect device when easily accessible and should be
rated no more than 10 amps.
Grounding the server: To avoid the potential for an electrical shock hazard, you must
reliably connect an earth grounding conductor to the server. The earth grounding
conductor must be a minimum 18AWG connected to the earth ground stud(s) on the rear
of the server. The safety ground conductor should be connected to the chassis stud with a
listed closed two-hole crimp terminal having 5/8 inch pitch. The nuts on the chassis earth
ground studs should be installed with a 10 in/lbs torque. The safety ground conductor
provides proper grounding only for the server. You must provide additional, proper
grounding for the rack and other devices installed in it.
Overcurrent protection: Overcurrent protection circuit breakers must be provided as part
of each host equipment rack and must be incorporated in the field wiring between the DC
source and the server. The branch circuit protection shall be rated minimum 75Vdc, 10 A
maximum per feed pair. If the DC power system for the equipment rack is installed with
more than 10 amperes of protection, you must provide supplemental protection for the
server.
Power Cord Usage Guidelines
Warning: Do not attempt to modify or use an power cord set that is not the exact type required. You
must use a power cord set that meets the following criteria:
•
Rating: In the U.S. and Canada, cords must be UL (Underwriters Laboratories, Inc.)
Listed/CSA (Canadian Standards Organization) Certified type SJT, 18-3 AWG
(American Wire Gauge). Outside of the U.S. and Canada, cords must be flexible
harmonized (<HAR>) or VDE (Verband Deutscher Electrotechniker, German
Institute of Electrical Engineers) certified cord with 3 x 0.75 mm conductors rated
250 VAC (Volts Alternating Current).
®
Intel
Server System SR1695WB Service Guide
93
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