Playing with some fiber

Tinman

Known around here
Nov 2, 2015
1,308
1,699
USA
During our last Polar freeze, I had some time to mess with some fiber on my network. The main goal was to pull a new fiber from the house to shop through my existing 2" PVC pipe buried many years ago. My main concern was ground potential rise and lightning. I run 8 cams off a POE+ switch in shop and that switch has a SFP port on it. These are great little switches and I have had one going for 2 years now. Fast forward to today I now have 3 of these same switches (one in shop and 2 in house). So I bought a OM3 cable on Amazon:


My worry was pulling the fiber through the conduit, which has power, doorbell, and alarm wires already in it as well as the cat5 cable to feed the shop. The fiber was premade as I did not want to attempt that stuff :) I pulled the original cat5 back into house with a pull string. I then attached the fiber to the cat5 carefully taping it to the cable. The pull string was attached to the cat5. When I pulled the fiber back through, I had my wife putting wire lube generously on the cables. Gently pulling I t made it through the pipe without too much pulling pressure. All in all it was about a 80ft trip from switch to switch. Everything hooked right up and has run perfect.

Here are the switches:

So that worked so well, my next project was to run fiber up from my basement to attic to my PTZ cam mounted on my roof peak. This one has always bothered me about lightning. Here I was fortunate to have a 1" PVC conduit already ran for my old satellite dish, which we no longer use. I bought another 15m OM3 fiber and this time I used one of these up in the attic:


and I had to buy a transceiver for the other switch in basement:


This was just plug and play stuff and all is working great. I enjoyed learning a few things along the way as well. Don't laugh too much at my cable management :)

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The most amazing thing on this whole project is how affordable fiber is now, and that that TP LINK Deco Mesh (I have 3 of them, one in basement, one upstairs and one in shop) when I unplugged the cat5 cable that feed the shop, that Deco kept all my 8 cams on that switch running without missing a beat, I could not believe it !
 
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Check the NEC rules to make sure your installation is compliant.

As stated elsewhere:

"A circuit for a doorbell (16 VAC circuit) from a button to a chime using 18/2 with insulation rated for 300 VAC could not be run in the same conduit with 120/240 VAC power wiring."

In general, non metallic fiber would be within the scope of NEC rules to run in the same conduit. But again check to make sure.

The issue besides safety is insurance coverage.
 
Check the NEC rules to make sure your installation is compliant.

As stated elsewhere:

"A circuit for a doorbell (16 VAC circuit) from a button to a chime using 18/2 with insulation rated for 300 VAC could not be run in the same conduit with 120/240 VAC power wiring."

In general, non metallic fiber would be within the scope of NEC rules to run in the same conduit. But again check to make sure.

The issue besides safety is insurance coverage.
That is correct.... next update will be to relocate the transformer to shop. About 43 yrs ago I actually used a real doorbell for my shop door to let me know when someone was at the shop. Now with my cameras I have other alerts in play and no longer need the doorbell to chime inside of house. In fact, I'll probably just eliminate the Dahua doorbell cam when it fails and just let them see my sign "Gone Fishing" :lmao:
 
For those that come to this post looking for preterminated fiber solutions for long distance (500' for example), there are commercial folks out there that do this. A 500' indoor/outdoor preterminated fiber optic cable with LC connectors at both ends with a conduit pulling sock will around run around $1 per foot + tax/shipping. Singlemode or MultiMode.
Discount Low Voltage

Not as economical compared to running a 2 strand fiber optic patch cable :) But it is an option. We use this Discount Low Voltage for all our fiber nowadays. We used to fusion splice pigtails and test/certify MM and SM fiber... but thankfully, those days are behind me.