Most of these disturbances originate right within the building. Computers generate the very harmonics they're sensitive to. Personal computers, laser printers and other switched-mode power supply equipment within your building are usually the culprits for most of the power supply irregularities affecting other computers. It's a problem that has only recently begun to be recognized in the building industry, as more and more computers and similar equipment are installed, turning the modern office or factory into a high-tech computer environment. In new construction or renovation, many power disturbances can be prevented or significantly lessened by designing for power quality assurance, at surprisingly small cost.
Savvy tenants know what to look for when shopping for space.
They want a facility that meets their power needs now, and in the future. Your implementation of the power quality design considerations itemized here will impact electrical safety and reliability and allow design of a more functional facility resistant to the effects of harmonics and transients. The modern factory floor is a high-tech, interconnected manufacturing system. Specify a separate, insulated full-size grounding conductor, rather than relying on the conduit alone. Use an isolated grounding conductor for sensitive equipment.