Surges and Spikes
A surge is defined as power exceeding 110% of normal voltage for a few seconds.
Surges are the most common cause of computer damage including memory and data loss, and lockups.
A spike is defined as a short burst of electricity (impulse) that greatly exceeds 100 percent of normal voltage for an extremely short duration.
Surges and spikes are caused by motors cycling on and off, lightning, and power company switching techniques.
Hubs are especially sensitive to surges and spikes.
Use surge suppressors to combat surges and spikes.
Surge suppressors contain MOVs, which absorb great amounts of voltage.