Originally Posted by imperialreign
You're talking to someone who lives in a house that's been struck by lightning 4 times within the last 10 years alone . . . the house and all circuits within are fully protected from such massive external spikes.
To demonstrate knowledge, define the electrical path that each surge took. If you have damage, then you listed that damage including the incoming and outgoing surge path. Otherwise, you have observations not supported by the underlying science - junk science conclusions. Amazing how many know a surge (high voltage) existed only because a blackout (low voltage) occurred. The word credibility applies.
Routine is for a plug-in protector to earth a surge destructively through any adjacent appliance. A TV’s protector earthed a surge through a portable phone base station in another outlet in the same room. Learned basic circuits to know that portable phone is electrically connected to the same power strip that a TV connected to. Please learn some basic electrical concepts which also explains why that TV’s power strip earthed a surge through a nearby phone base station.
Both paragraphs are facts learned before you can tell us anything about four strikes. Based upon details posted, you have only speculated that strikes existed. And then automatically assumed protectors that do not claim that protection, instead and miraculously provided that protection. How did that protector do what even its manufacturer will not claim? A problem we engineers so often must confront - bluntly. Experts who know without first learning.
That UPS acts as a filter? Absolute nonsense. You would have known that from facts and numbers already posted. Why did you ignore technology to again post an outright myth? Learn what a UPS does. It connects an appliance directly to AC mains when not in battery backup mode. How does a relay become a filter? Please. Every question in those post not answered only further confirms too much ‘knowledge without first learning’. How does that relay become a fitler?
More questions. Where are numbers that claim any filtering? I install the same filter by purchasing some two cent capacitors at Radio Shack for their inflated 70 cents. What kind of filtering is that? Same filter the your UPS does. But again, you have claimed filtering without also posting the numbers. So again, where is this filter in that UPS? A sales brochure said "Filter" and forgot to include the phrase "Near Zero"? Since it had no numbers, then you “know” that filtering stops spikes and surges?
How does that filter stop what three miles of sky could not? Credibility says you have an answer. Especially when you read those manufacturer spec sheets to know before posting.
Existing filter required in every appliance (including the microwave, TV, etc) by FCC regulations are superior to what that UPS does. Where are you numbers to dispute this? Unfortunately your numbers will only confirm this paragraph. Massive filtering already exists in appliances. But somehow s UPS does filtering? Well, yes. The only filtering is required for its control circuits – while all other appliances are connected directly to AC mains. Another example of 'knowledge without first learning'.
Those internal transients are damaging to appliances? Another myth so insulting because the deception is obvious. AND was exposed in earlier posts - with numbers. Reposting those myths only degrades your credibility. Did you not grasp layman’s reasons why those spikes do not exist?
Or maybe you just forgot what was posted. If spikes exist, then you are replacing dimmer switches and GFCIs every day. Are you? Please, learn this basic knowledge before posting. Or return to learn from an earlier post. Please stop embarrassing me with those junk science myths. Please learn simple electrical concepts before posting "these small spikes are extremelly damaging to appliances, and even more-so to the PC. " Obviously that is not true – can only exist when someone entertain hype and fear – and does not learn the numbers.
What are small spikes? Tens of volts. What is the output from a UPS when in battery backup mode? Two 200 volt square waves with a spike of up to 270 volts between those square waves. If appliances are so destructive, then a UPS destroys everything. Please learn reality before posting. How can anyone attribute credibility to your posts after you ignore technical facts; repost "small spikes are extremelly damaging"; promote a virtually zero filter inside a UPS as miraculous.
So how much does it cost to replace a dimmer switch and bathroom GFCI every hour? Reality - those interior destructive spikes are classic urban myth - never existed - easily promoted so that fear replaces logic.
Please read and comprehend technical facts to protect your credibility. Amazing how those ten volt spikes cause damage when a 270 volt spike from a UPS does not. All appliances - especially computers - already contain protection that make those mythical spikes only further irrelevant.