Surge protectors for HT and PC

[Exterous]

Originally posted by: westom
In your previous post:

Did I even ever claim that a UPS offered protection? No.

Then why are you posting? OP was asking for surge protection. You recommended a UPS, then admit it provides no protection? Then reply with accusations and profanity? Please learn to help the OP when he was asked for something that does offer protection ? which is not a UPS.

Actually he typed this:

Originally posted by: Obsoleet
Or should I get something else.

Which says he is asking for opinions for getting something else. If you cannot comprehend this then I cannot help you

You recommend something only because you *heard* it recommended ? never even asked why? You did not even read manufacturer's numeric specifications that claim no such protection?. And then you recommend it?

Eh? Who is accusing now? I never claimed it offered surge protection. Ever. Computers need to be shut down properly. If they are not it can cause errors. THIS is why I recommended a UPS. Feel free to go on trying to contest a point I never made

 

[westom]

Originally posted by: smokeyjoe
Where are the numbers that claim surge protection?
I presume you mean "what"; but here is where the numbers are if you are so inclined to look - And according to that link, the UPS provides 420 joules of surge energy rating (whatever that means) and this blurb "Full time multi-pole noise filtering : 5% IEEE surge let-through : zero clamping response time : meets UL 1449", which I guess you should comprehend.

420 joules means that as little as 140 get used during a surge and never more than 280. Meanwhile, how does it absorb a surge that is hundreds of thousands of joules?

Notice the specs do not list the various types of surges and protection from those surges. At best, it mentions 420 joules - and only because that is required for the UL1449 listing.

UL1449 says nothing about surge protection. UL does not rate a product for performance. UL is only about human safety. A protector can be confronted by a major surge during the test, fail (provide no protection) and still get UL1449 listing. It does not spit sparks and flames. Therefore it did not threaten human life.

How much filtering? dBs were not even listed. Just some subjective claim of filtering. Where is this filtering? It does not say.

Meanwhile will a filter stop a surge? Or course not. Anything that may try to stop a surge means surge voltage will increase as necessary to maintain that current flow.

If does not claim any surge protection. It would have you believe it somehow stops or absorbs a surge. Well the NIST says what a protector must do:
> You cannot really suppress a surge altogether, nor "arrest" it. What these
> protective devices do is neither suppress nor arrest a surge, but simply
> divert it to ground, where it can do no harm.

Where does that UPS claim to do any of that? It does not because it does not provide surge protection.