48APPENDIX C: SITE REQUIREMENTS AND SAFETY CODES
■Be sure that each wiring closet has a suitable ground. Ground all metal racks, enclosures, boxes, and raceways in the closet.
■Use AC power,
■Be especially sure to meet all system environmental requirements in Appendix A, such as ambient temperature and humidity.
■Be sure that the ventilation in the wiring closet is adequate to maintain a temperature below 40 °C (104 °F).
■Install a reliable air conditioning and ventilation system if you plan to have two or more CoreBuilder 9400 systems in a single wiring closet.
■To prevent overheating during nonbusiness hours, guard against the ventilation being shut down while a CoreBuilder 9400 system remains powered up.
Distribution Rack Requirements
If you plan to mount your CoreBuilder 9400 system in a distribution rack, verify that your rack meets the basic mechanical and space requirements described in this section.
Protective Grounding for the Rack
Proper distribution rack grounding ensures that voltages induced into wiring by lightning or other disturbances are directed to ground. Normally, you use a distribution rack grounding kit and a ground conductor that is carried back to earth or to another suitable building ground. To order the grounding kit, contact your sales representative.
Space Requirements for the Rack
Provide enough space in front of and behind the system so that you can service it easily. Allow a minimum of 76 cm (30 in.) between the rack and any wall behind or in front of it. Extra room on each side is optional. See Figure 15.
Install your distribution rack near an easily accessible power outlet. You can power down the system only by removing the power cord from the power source.
