2008/7/23 Mark Roberts <[EMAIL PROTECTED]>: > A backup battery will keep it going during a power outage, but doesn't > help protect against a direct lightning strike. (A house two streets > over from ours suffered a hit two summers ago. I suppose I could tell > myself that it's on higher ground and so we're much more likely to get > hit here, but that's not something I want to rely on!)
There's not a lot of thunderstorms where I live. However, the power companies are as negligent here as anywhere else, and we've had our share of transformator blow-ups... Apparenly what happens is that explosive gas develops inside the trafo due to missing maintenance. My guess would be hydrogen gas electrolysed from rain seeping into the construction, but I dunno. Those blow-ups are famous for sending powerful current spikes through the grid. Summer two years ago, we lost 3 large 3Com Superstack switches at work when a larger trafo in the neighborhood blew up. So add the occasional thunderstorm, and there's all the more reason to be careful with precious data... I currently rely on this setup: wall socket -> surge protector -> voltage stabilizer -> surge protector -> PC. Reason for the stabilizer is that grid voltage tends to drop well below the nominated 230V in electric "rush hours" in winter. Late afternoons are the worst, when people get home from work, do their cooking, turn up the heat in their living room, deal with the laundry, etc. Leaving out the battery part of the UPS reduce cost tremendously. Here's the stabilizer: http://www.apcc.com/resource/include/techspec_index.cfm?base_sku=LE1200I The surge protectors are standard run-of-the-mill cheap thingies that sometimes stops working and gets replaced. I hope it's not false security... Jostein -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
