Technical Resource Management Company June 08, 2003 FACTOID Shocking Facts about Power Surges Lightning and power surges cause about $500 million i damage to electronics each year in the U.S. and Canada. As many as 20% of PCs are damaged by power surges, and even small surges will ruin your electronics over time-not just computers but also TVs, VCRs, and other household items. And surges don't just come through electric plugs. Nearly 30% enter homes through phone lines or cable-TV lines. It isn't foolproof, but it's smart to plug all valuable electrical items into surge protectors and/or UPSs (Uninterruptable Power Supplies)