HP 9000 rp4410-4 Site Preparation Guide, Third Edition - HP 9000 rp4410/rp4440 - Page 23

2 General Site Preparation Guidelines The following information provides general principles and practices to consider before the installation or operation of an HP 9000 rp4410 or HP 9000 rp4440 server. Electrical Factors NOTE Electrical practices and suggestions in this guide are based on North American practices. For regions and areas outside North America, local electrical codes will take precedence over North American electrical codes. An example would be the recommendation that the PE (Protective Earthing) conductor be green with yellow stripes. This requirement is a North American directive and does not override the local code requirements for a region or area outside North America. Local authority has jurisdiction (LAHJ) and should make the final decision regarding adherence to region-specific or area-specific electrical codes and guidelines. Proper design and installation of a power distribution system for an HP 9000 rp4410 or HP 9000 rp4440 server requires specialized skills. Those responsible for this task must have a thorough knowledge and understanding of appropriate electrical codes and the limitations of the power systems for computer and data processing equipment. In general, a well-designed power distribution system exceeds the requirements of most electrical codes. A good design, when coupled with proper installation practices, produces the most trouble-free operation. A detailed discussion of power distribution system design and installation is beyond the scope of this document. However, electrical factors relating to power distribution system design and installation must be considered during the site preparation process. The electrical factors discussed in this section are: • Computer room safety • Power consumption • Electrical load requirements (circuit breaker sizing) • Power quality • Distribution hardware • System installation guidelines Computer Room Safety Inside the computer room, fire protection and adequate lighting (for equipment servicing) are important safety considerations. Federal and local safety codes govern computer installations. Fire Protection The National Fire Protection Association's Standard for the Protection of Electronic Computer Data Processing Equipment, NFPA 75, contains information on safety monitoring equipment for computer rooms. Chapter 2 23