IBM RS/60000 Series Site And Hardware Planning Information page 397

v The rack/cabinet, PDU and Multi-Outlet Strips, and products installed in the rack/cabinet must all be
properly grounded to the customer facility ground.
There must be no more than 0.1 Ohms between the ground pin of the PDU or rack plug and any
touchable metal or conductive surface on the rack and on the products installed in the rack. Grounding
method must comply with applicable country's electric code (such as NEC or CEC). Ground continuity
can be verified by your IBM service personnel, after the installation is completed, and should be verified
prior to the first service activity.
v The voltage rating of the PDU and multi-outlet strips must be compatible with the products plugged into
them.
The PDU or multi-outlet strips current and power ratings must be at least 1.25 times the sum of the
ratings of the products that will plug into it. The current rating of the PDU or Multi-Outlet strip must be
less than 0.80 of the rating for the building supply circuit (as required by the NEC and CEC). Example:
A PDU rating of 12A for a 15A wall breaker, and sum of product ratings does not exceed 9.6A.
If a UPS is installed, it must meet all the above electrical safety requirements as described for a PDU
(including certification by an NRTL).
v The rack/cabinet, PDU, UPS, multi-outlet Strips and all products in the rack/cabinet must be installed
according to the manufacturers instructions, and in accordance with all national, state or province, and
local codes and laws.
The rack/cabinet, PDU, UPS, multi-outlet strips and all products in the rack/cabinet must be used as
intended by the manufacturer (per manufacturers product documentation and marketing literature).
v All documentation for use and installation of the rack/cabinet, PDU, UPS, and all products in the
rack/cabinet, including safety information, must be available on-site.
v If there is more than one source of power in the rack/cabinet, there must be clearly visible safety labels
for "Multiple Power Source" (in the languages required for the country in which the product is installed).
v If the rack/cabinet or any products installed in the cabinet had safety or weight labels applied by the
manufacturer, they must be intact and translated into the languages required for the country in which
the product is installed.
v If the rack/cabinet has doors, the rack becomes a fire enclosure by definition and must meet the
applicable flammability ratings (V-0 or better). Totally metal enclosures at least 1 mm (0.04") thick are
considered to comply.
Nonenclosure (decorative) materials must have a flammability rating of V-1 or better. If glass is used
(such as in rack doors) it must be safety glass. If wood shelves are used in the rack/cabinet, they must
be treated with a UL Listed flame-retardant coating.
v The rack/cabinet configuration must comply with all IBM requirements for "safe to service" (contact your
IBM Installation Planning Representative if in doubt).
There must be no unique maintenance procedures or tools required for service.
Elevated service installations, where the product(s) to be serviced are installed between 1.5 m and 3.7
m (5' and 12') above the floor, require the availability of an OSHA and CSA approved nonconductive
step ladder. If a ladder is required for service, the customer must supply the OSHA and CSA approved
nonconductive step ladder (unless other arrangements have been made with the local IBM Service
Branch Office). Products installed over 2.9 m (12') above the floor require a Special Bid to be completed
before they can be serviced by IBM service personnel.
For products not intended for rack-mounting to be serviced by IBM, the products and parts that will be
replaced as part of that service must not weigh over 11.4 kg (25 lbs.) (contact your Installation Planning
Representative if in doubt).
There must not be any special education or training required for safe servicing of any of the product(s)
installed in the racks (contact your Installation Planning Representative if in doubt).
Chapter 14. Rack Specifications
379