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Discussion Starter #1
Hi everyone,

just had a question I am looking to get some help on;

Can I run ethernet cable (cat5/6) outside underground?

I have tried researching on this and have found different views; both that its okay and also that it is not, because it can be an electrical hazard.

I would run the cable outside and underground in conduit about 50 feet.

So any and all help I can get will be appreciated.

Thanks
 

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Its done all the time in corporate environments, although fibre is now the way to go.

For home users, the key is using conduit, as you've said you will. That's because the ground shifts over time and even a person walking over buried wire might have an effect. The conduit has to be completely water-tight, and there must be no ethernet cable joints, couplers, or other connections within the conduit. Both ends of the conduit must be above ground (hopefully a foot or two).

You can even purchase a shielded ($$$) run of Cat5e or Cat6, not necessarily for any EMF effects but just for more solidity to the cable.
 

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You might consider running two sets of ethernet cable to be extra cautious. At the very least run some string so if you need to draw a cable through in the future, you can.
 

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You would need to run what is called "flooded" cable.

For all intents and purposes, buried conduit is considered wet.

For 50 ft, I'd do wireless, or HPNA over a twisted pair cable designed to go under ground (which the cable is rather cheap).

The issue of safety comes woth the power to the outbuilding, in the electrical code requires it to have a separate neutral and ground if you are running other metallic path to the building.
 

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There is no shock hazard as long as there are no high voltage (240/120v) electrical cables in the conduit. Use cable rated for wet locations. It's basically the same as regular CAT5/6 cable with better insulation. Even the regular RG5/6 should be Ok but will not last as long in damp or wet conduit.
 

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Discussion Starter #8
what i want to do is run cat6 and rg6 in the same underground pvc conduit - and ideally using direct burial cat6 - any possible problems with this?

thanks
 

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Water will get into the buried conduit no matter what you do.

If it were me running the ethernet, I would install a 2" communication conduit (not plumbing conduit as the 90 degree bends are too tight). The 2" conduit will give you room for future considerations and lots of room to pull the ethernet. The cost of the larger conduit is minimal considering all the work you're going to do to install the conduit.

In the conduit I would install grease filled cat5 cable which will last a long time. The grease filled can be direct buried, but I would still recommend a conduit.

Hope that helps
 

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Discussion Starter #11
thanks everyone for all your help.

it seems that i have a lot to think about - and do some more reading/research there seems to be many different options as you all have suggested.

thanks again to everyone - your help is appreciated.
 

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Hi
Does anyone know the answer to this?
Is 56 coax the same as cat5 ethernet cable.
I have been from two trusted sources to use these to run from an existing building to a new building.
Thank you
Barry
 

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^^^^
Coax and twisted pair (Ethernet) are two completely different kinds of cable. Coaxial cable has a centre conductor and a shield. Ethernet uses twisted pairs, usually without shield, but you can get some that have either overall shield or individual pair shields. You can run Ethernet up to 100 metres.
 

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I get a pretty decent wireless N router if I were you. It cheaper and instead of one connection going to one place you got a network that can be use anywhere in range. You connect the wireless N Router to a directional antenna put some strong security and you are set. But if you really have to lay down some pipe for something else anyway leave yourself a messenger wire so that you could put some Fiber when the price of it get dirt cheap. And for god sake always call the GAS company before digging.
 

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Internet

Thanks James.
So if I want to run an underground internet/ connection from the cable box to another building 120 ft away ethernet cable would be OK? and if I wanted to also have tv what kind of coax should I use? and would the coax carry both signals.Thanks
Barry
 

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^^^^
You'd need both types of cable for the two services and you'd need cable suitable for burying. The coax is usually RG-6, but there are other 75 ohm cable types that are suitable. Years ago, Ethernet used 50 ohm coax @ 10 Mb/s, but that's long obsolete. If you're laying one cable, two isn't much more effor.
 

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outside

you can run cat5 outside in conduit, it doesn't last long and the coduits fill with water , I had a payphone outside it got run over by a City of Calgary truck. He backed into it and knocked it off the pedistal on a Esso Vidio camera LOL. Then he got out and tried to stand it back up lol he tried to fix it, when it was knocked down it ripped the wires out of the ground. But anyways the cat5 feeding the phone was 1 year old I pulled it out and skinned it and inside the cable was full of water. The phone was working ok but if your running IP phones it causes an echo and data seems to work ok for a while the cable rots in the conduit. You got to use the good stuff fiber or the jelly filled cat5 for out side use if you wont it to last. the water in the conduits freeze solid in the winter here pretty extreme enviroment.:cool:

I am Canadian and love bix
:eek:
 

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I have CAT-6 and coax running from my house to my pool cabana. I believe the run is about 50 ft and it is in conduit. I have been using it for 4 years without any problems.
 

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Wayne, Good news as I just ran 2 CAT-6 and coax to my pool house (about 50 feet away) and I hope it will operate for a long time. I used one of those 1 inch flexible conduits so there were no underground joins I had to glue except for the connection to each building which was done above grade.
 
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