The following is a quote from a Screwfix catalogue:"6G 2m high spec surge protection lead, incorporates surge protection for BT/ Modem supplied with 1 x BT Male to RJ11 connector and 1 x RJ11 to BTFemale connector. LED confirms protection with audible alert warns when unitis not protected. Filters RFI which can interfere with TV / AudioEquipment."What does it mean by alerting when it's not protected? Why would it not beprotected?a

when it has exploded - which is what they do

Post on controversial technical issues. Usually involvingsimple science that is contrary to popularly held viewpoints. Another urban myth is a widespread belief (almost a worship)in Arctic Silver. Again so many advocate the stuff withoutany knowledge or consideration of the numbers; without anyexperience in thermal equations or thermal conductivity.Plug-in surge protectors are widely promoted but technicallyinaccurate myths. Why? Even before WWII, science understoodthat surge protection is earthing; not some magical plug-inbox. The science is quite simple - and so rarely understood.James Hart wrote:

Surge protection?

Nov 23, 2003 22 Replies

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Chris Oates 22 years ago

we use them at work to avoid PC resets when the Starlings arrive at tea time to roost on the HV lines near us

Totally silent

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N. Thornton 22 years ago

Computer power supplies contain all the filtering and surgeproofing they need for running on mains. If they didnt the manufacturers would be forking out a lot to disgruntled customers and lawyers.

House contents insurance normally already covers computers against lightning damage.

Computer PSU failures are no lower than they were 10 years ago.

A 4 way mains strip costs £2 now.

Regards, NT

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w_tom 22 years ago

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