"Most of us never really think about the power quality our
systems are fed. We use simple power strips or surge protectors, and
generally never give the issue another thought.. That is, until you have
a power surge or blackout, and lose that important article or term paper
you've been working on for the past 12 hours. However, power outages and
surges are not the only concern facing computer users, as poor power
sources (low quality wiring, old homes, etc) can also create problems
with fluctuations, which can damage you hardware or corrupt your data."