Fizbin wrote: > Strange how turning a breaking off and on would do that. I wonder if the > outcome would have been the same if the power (lines) went off and on?
Probably. Depending on the utility provider, and the configuration of the circuits and their respective loads on energizing, every time you re-energize at the service panel or elsewhere, you run the risk of a transient on the line. Some larger loads push all sorts of irregularities on the local circuit as they cycle off and on. Depending on the voltage sensitivity of the connected equipment, that can either weaken internal components over time or take them out outright. And few power supplies are going to stop those kinds of transients from reaching the supply rails for a few milliseconds. So the equipment slowly takes hits, eroding the weakest parts (usually microprocessors) to eventual failure. And today, even major appliances like refrigerators are stuffed full of chips. So your best bet with todays electronics is always a three tiered transient protection strategy, starting at the meter, continuing at the service panel, with final local protection at the outlets supplying the devices. This will catch the bigger grid spikes from getting too far into your location, while catching the smaller remainder waveform and protecting the devices from each other at the outlets themselves. On the most critical equipment, full sine-wave protection UPS is practically a necessity today. You would be amazed at how much longer all electrical devices last when given comprehensive transient protection. ------------------------------------------------------------------------ sgmlaw's Profile: http://forums.slimdevices.com/member.php?userid=13995 View this thread: http://forums.slimdevices.com/showthread.php?t=109831
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