Ralf Mardorf silver.bullet at
Fri Dec 1 08:56:26 UTC 2017


On Fri, 01 Dec 2017 08:15:07 +0100, Xen wrote:
>you can install a protection against power surges (that we all have I
>guess) and solve the problem forever.

Yes, we all own several, since it's more or less impossible to
get a power strip without one. However, for overvoltage protection they
are quasi useless, unless you have all 3 types of good quality, Surge
Protective Devices EN 61643-11, EN 62305 type 1, 2 and 3. Actually you
usually will find all 3 types in one power strip, but AFAIK they need
to be separated in different locations of the house and from far better
quality, building feed type 1, floor distributor type 2 and socket type
3. It doesn't harm to have those all in one protections, I ensure that
important gear is pseudo-protected by those devices. Actually friends
already experienced serious overwaltage issues caused by lightning and
IIRC most of the times, if not always, those power strip protections
didn't protect their equipment. Just some spark gap/gas discharge
valve + varistor + suppressor diode in a power strip is quasi just a
type 3 and not really a type 1, 2 and 3 device. At best I've got
superficial knowledge, so don't take my words too seriously, but at
least I know people who had bad luck with those protections in one
power strip.

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