Re: 10BT cables and lightning
"Walter L. Preuninger II" <[EMAIL PROTECTED]> writes: [snip] > Would running the cable thru some metal conduit protect me? Are there > devices similar to surge suppresors for ethernet cables? I was reading a section in an IBM manual about the requirements for running twinax (sort of like thick coax) cabling outside a building. Each end of the cable must be run through a box to protect the equipment, and (paraphrased) the box "must be no closer than [some number of] feet from any flammable objects". I would really recommend trying to run it inside. A hole drilled at the bottom of a wall is quite unobtrusive in a carpeted room. -- Carey Evans <*> [EMAIL PROTECTED] date= 1*2DIGIT month 2DIGIT; day month year -- Y2K bug in RFC822 -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: 10BT cables and lightning
On Thu, Jun 12, 1997 at 08:59:32AM -0500, Walter L. Preuninger II wrote: > I would like to setup my home-net using 10bt cables between my linux and > windoze boxen, but the only way I have to run the cables is to run it out > a window, under the house, and back in a window. Is there any method of > protecting the cables & cards from lightning damage? Several pc's and a 16 > port concentrator died recently due to a very close lightning strike. > > Would running the cable thru some metal conduit protect me? Are there > devices similar to surge suppresors for ethernet cables? Ouch. Sounds like Ethernet just isn't intended for the environment you're intending. You really can't drill a couple of holes in the floor or the walls? The metal conduit might help, but it may also attract the lightning .. Hamish -- Hamish Moffatt, StudIEAust[EMAIL PROTECTED] Student, computer science & computer systems engineering.3rd year, RMIT. http://hamish.home.ml.org/ (PGP key here) CPOM: [ ] 47% The opposite of a profound truth may well be another profound truth. --Bohr -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: 10BT cables and lightning
Walter L. Preuninger II writes: > Is there any method of protecting the cables & cards from lightning > damage? Several pc's and a 16 port concentrator died recently due to a > very close lightning strike. Unplug everything and disconnect all long cables during thunderstorms. John Hasler [EMAIL PROTECTED] (John Hasler) Dancing Horse Hill Elmwood, WI -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: 10BT cables and lightning
From: "Walter L. Preuninger II" <[EMAIL PROTECTED]> > I would like to setup my home-net using 10bt cables between my linux and > windoze boxen, but the only way I have to run the cables is to run it out > a window, under the house, and back in a window. Is there any method of > protecting the cables & cards from lightning damage? Several pc's and a 16 > port concentrator died recently due to a very close lightning strike. There is a good deal you can do against lightning damage, but nothing to protect from a really near strike unless you have a good engineer and a whole lot of money. Check that all of your equipment is plugged into grounded outlets and that the ground terminal of the outlet is actually connected. Many of the surge suppressors on the market border upon being "snake oil" (open some up and look inside). They might help, but don't count on them. Instead of UTP wire, get the shielded stuff, and ground the shield on _ONLY_ONE_END_. Leave the other end "floating" to prevent ground loops. If you want to be expensive, use optical fiber for your net, which will not get induced voltages due to lightning. Use ferrite beads at the ends of all long wires (including the phone wire) to reduce the possibility of induced common-mode current due to a nearby strike. I got some cheap ferrite donuts at the ham radio flea market that I use for RF suppression, but they work for electromagnetic impulse as well. I put as many turns of the wire through them as will fit. Look for unintentional paths to long wires - such as from the sound card to the hi-fi to the cable-TV wire. Maybe you don't need that, or if you want to keep it, get an isolation transformer for the cable-TV wire. Even after all of this, you might get zapped again. Bruce -- Bruce Perens K6BP [EMAIL PROTECTED] 510-215-3502 Finger [EMAIL PROTECTED] for PGP public key. PGP fingerprint = 88 6A 15 D0 65 D4 A3 A6 1F 89 6A 76 95 24 87 B3 -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: 10BT cables and lightning
APC makes 10BT surge suppressors (Part no. P10BT.) I don't know how good they are, but I've been happy with their UPSes. -- Lee Bradshaw [EMAIL PROTECTED] -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
10BT cables and lightning
I would like to setup my home-net using 10bt cables between my linux and windoze boxen, but the only way I have to run the cables is to run it out a window, under the house, and back in a window. Is there any method of protecting the cables & cards from lightning damage? Several pc's and a 16 port concentrator died recently due to a very close lightning strike. Would running the cable thru some metal conduit protect me? Are there devices similar to surge suppresors for ethernet cables? Thanks, -- Walter L. Preuninger II waldo @ irc.wasteland.org:#unix [EMAIL PROTECTED] http://walterp.rapidramp.com Finger [EMAIL PROTECTED] for PGP public key, or visit my web page. L I N U X Where You Really Should Be! -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
