Decibel! wrote: > <dons EE hat> > Pretty much every surge supressor out there is a POS... 99.9% of them > just wire a varistor across the line; like a $0.02 part is going to stop > a 10,00+ amp discharge. > > The only use I have for those things is if they come with an equipment > guarantee, though I have to wonder how much those are still honored, > since as you mention it's very easy for equipment to be fried via other > means (ethernet, monitor, etc).
My UPSs, from American Power Conversion, have one of those impressive guarantees. It specifies that all connections to my computer must be protected: power, modem, ethernet, etc. It further specifies that everything must be UL or CSA approved, and so on and so forth. Well, that is what I have. > >> net to eliminate any direct electrical connections between machines that >> are not on the same power circuit (the aforesaid burned motherboard >> taught me that particular lesson). And yet I still fear every time a >> thunderstorm passes over. > > Wired is safe as long as everything's on the same circuit. My house is > wired for ethernet with a single switch running what's going to every > room, but in each room I have a second switch on the same power as > whatever's in that room; so if there is a strike it's far more likely > that I'll lose switches and not hardware. My systems are all in the same room. The UPS for the main system has a single outlet on a circuit all its own all the way back to the power panel at the building entrance. The UPS for my other system also has a outlet on a circuit all its own all the way back to the power panel at the building entrance -- on the other side of my 240 volt service so they sorta-kinda balance out. The only other UPS is a little 620 VA one for the power to the Verizon FiOS leading into my house. That is fibre-optic all the way to the pole. I will probably get less lightning coming in that way than when I used to be on copper dial-up. ;-) > >> Then of course there are the *other* risks, such as the place burning to >> the ground, or getting drowned by a break in the city reservoir that's >> a couple hundred yards up the hill (but at least I needn't worry about > > Invest in sponges. Lots of them. :) -- .~. Jean-David Beyer Registered Linux User 85642. /V\ PGP-Key: 9A2FC99A Registered Machine 241939. /( )\ Shrewsbury, New Jersey http://counter.li.org ^^-^^ 22:00:01 up 34 days, 1:22, 5 users, load average: 4.05, 4.22, 4.25 ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
