Office buildings, schools,
hospitals, and your own home; the use of microprocessor-based
equipment has become prevalent in all day-to-day environments.
Commercial and industrial facilities have
computer systems, fax machines, and automation equipment. Retail locations have
sophisticated cash registers and electronic scanning and security systems. At home, we have
stereos, personal computers, TVs, and VCRs. In today's world we are dependent on (and
take for granted) the performance of all this sophisticated yet sensitive equipment.
equipment is extremely sensitive to momentary spikes and surges that occur daily
over AC circuits. Sources for these transient spikes and surges range from lightning
and utility switching to inductive load switching such as air conditioners, power tools,
vacuum cleaners, and copy machines. Externally or internally induced, high
energy spikes and surges are capable of causing catastrophic instantaneous damage or
cumulative transients that continue to erode the effectiveness of the equipment, hindering
performance until it prematurely fails.
The best line of defense for
any location is a coordination of protection at the service entrance, branch service
locations, and at the point of use. Pass & Seymour/Legrand