HP Visualize J5000 hp Visualize J5000, J7000 workstations site preparation gui - Page 23

NOTE Site Preparation Guidelines Preparing for Installation result in a fire hazard. A shared neutral conductor that fails open-circuit will result in possible over-voltage damage to equipment. Computer equipment power cord and plug requirements also vary from country to country. Unusual power cords and plugs that cannot be ordered must be fabricated by a qualified electrician to meet local safety codes and requirements. Power Line Transients and Noise Heavy electrical loads from nearby machinery or equipment (such as elevators or electric welders) can cause power transients and noise which may cause system errors. This can occur even if the other equipment is on a separate circuit breaker. Under these conditions, you should provide a separate (completely independent) power panel. This should have an isolated ground and separate circuit breaker, and be fed directly from the main building power source or a secondary power source. Your Hewlett-Packard CE can monitor your power line for electrical noise and transients. If found, the CE can make appropriate recommendations concerning the use of line conditioning devices. Sources of Electrical Interference Convenience Wall Outlets Power outlets for building maintenance equipment (such as vacuum cleaners, floor buffers, etc.) must be wired from circuit breakers on a power panel completely separate from the computer system panel. The ground connections from these outlets must be connected to a building power distribution panel, not the computer system ground. Your electrician can verify whether maintenance outlets are on separate panels and grounds. If a separate power source and ground are not provided, operation of janitorial equipment can induce electrical noise and cause abnormal operation of the computer system. Lightning In some geographical areas, it may be advisable to install lightning Chapter 2 19