A quotation from the second citation: "The modular design of loose-tube cables typically holds up to 12 fibers per buffer tube with a maximum per cable fiber count of more than 200 fibers. Loose-tube cables can be all-dielectric or optionally armored. The modular buffer-tube design permits easy drop-off of groups of fibers at intermediate points, without interfering with other protected buffer tubes being routed to other locations. The loose-tube design also helps in the identification and administration of fibers in the system."
What's the "optional armor"? Is it metallic? Since it's an alternative to "all dielectric," it likely is metallic. You have to be sure that the actual cable in use doesn't have any metal at all in it before you state that it isn't a lightening / high voltage contact hazard. More from the second citation: "In a loose-tube cable design, color-coded plastic buffer tubes house and protect optical fibers. A gel filling compound impedes water penetration. Excess fiber length (relative to buffer tube length) insulates fibers from stresses of installation and environmental loading. Buffer tubes are stranded around a dielectric or steel central member, which serves as an anti-buckling element." This paragraph explicitly cites a "steel central member" which is likely for tensile strength. Admittedly, the multiple-fibre cables aren't going to be used for house drops. But you never know what may be in a specific engineering design. Fred Holmes At 07:09 AM 11/20/2007, Daniel Else wrote: >Google "fiber optic cable" or read: > >www.howstuffworks.com/fiber-optic.htm > >www.arcelect.com/fibercable.htm > >Do you know the actual construction of the Fios cable? While the data >transmission medium is glass fiber, there may well be a metal wire or jacket >component for tensile strength. If the latter exists, it could conduct a >lightening strike or a hit from a broken high tension wire. > > > > >************************************************************************ >* ==> QUICK LIST-COMMAND REFERENCE - Put the following commands in <== >* ==> the body of an email & send 'em to: [EMAIL PROTECTED] <== >* Join the list: SUBSCRIBE COMPUTERGUYS-L Your Name >* Too much mail? Try Daily Digests command: SET COMPUTERGUYS-L DIGEST >* Tired of the List? Unsubscribe command: SIGNOFF COMPUTERGUYS-L >* New address? From OLD address send: CHANGE COMPUTERGUYS-L YourNewAddress >* Need more help? Send mail to: [EMAIL PROTECTED] >************************************************************************ >* List archive at www.mail-archive.com/computerguys-l@listserv.aol.com/ >* RSS at www.mail-archive.com/computerguys-l@listserv.aol.com/maillist.xml >* Messages bearing the header "X-No-Archive: yes" will not be archived >************************************************************************ ************************************************************************ * ==> QUICK LIST-COMMAND REFERENCE - Put the following commands in <== * ==> the body of an email & send 'em to: [EMAIL PROTECTED] <== * Join the list: SUBSCRIBE COMPUTERGUYS-L Your Name * Too much mail? Try Daily Digests command: SET COMPUTERGUYS-L DIGEST * Tired of the List? Unsubscribe command: SIGNOFF COMPUTERGUYS-L * New address? From OLD address send: CHANGE COMPUTERGUYS-L YourNewAddress * Need more help? Send mail to: [EMAIL PROTECTED] ************************************************************************ * List archive at www.mail-archive.com/computerguys-l@listserv.aol.com/ * RSS at www.mail-archive.com/computerguys-l@listserv.aol.com/maillist.xml * Messages bearing the header "X-No-Archive: yes" will not be archived ************************************************************************
