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Outdoor ethernet cable next to power line

peste19

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I have a 4 brick side house with everything finished and i only really have 1 "conduit" where i can pass my ethernet cables. I was planning on using it to power poe cameras so i know i need to buy at least outdoor rated cables.

Unfortunately its where the power line cables passes too so i dont know if i need to have a specific type of cable or if its even possible at all since there will be poe.

Upon some research i saw the stp ethernet cables provide some extra shielding but not sure if that is sufficient or doesnt matter at all and at the same time, i dont know if cat5e or cat 6 cables would make a difference also.

Can someone shed some light for me on what would be the best for my scenario?


thanks in advance
 

TonyR

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  • By "power line" are you referring to the 120VAC "line" voltage in or from the house?
  • Are the "power line cables" in the same conduit as the Ethernet?
  • If not, are they running parallel to the Ethernet?
  • Is the conduit for the Ethernet metallic or PVC?
 

peste19

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Let me correct my initial post, its not a conduit, its a hole in the wall where the basic cables come in like electric, tv and phone.

The cables would just be side by side for about a foot or two.

I dont think there will be a problem however just want to be sure especially since these cables will be carrying low current.
 

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TonyR

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Yikes! Bricks and mortar.

To keep from drilling and caulking a 3/8" hole in a mortar joint for UTP CAT-5e or 6 at least 2 feet away, I try running STP (shielded) CAT-5e or 6 in through the existing hole and connect its shield to that exposed, solid copper grounding conductor with the clamps on the outside of the house and see how it goes. Do not tie the other end to ground and don't use a RJ-45 for STP.

If it causes interference, move 2 feet away a drill a hole in a mortar joint with an impact masonry bit, likely 3/8", for your UTP.

Either method (STP in the ex. hole or UTP in a new hole 2 feet away), be sure to put a drip loop in the cable on the outside and caulk the gaps with outdoor-rated silicone sealant. Also use outdoor-rated, UV-resistant CAT-5e or 6 so it will last longer.
 

c hris527

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Yea I think I'd be popping a new hole through that for you cam cables.
 

peste19

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@TonyR, @c_hris
Yep, thats my dilemma, I also have a finished basement so drilling a hole 2 feet away is not really an option for me unless i am willing to mess up some drywall and ceiling.

@TonyR
I have a couple of questions regarding your answer:
1) When you said shield, im assuming you are referring to the inner shield of the cable, how can i connect that to the ground without cutting the outer shield of the cable.
2) I know this is going to sound dumb but what should i use if not a rj-45

My plan was to run a cables directly from the nvr to each camera, is this a bad idea?
 

TonyR

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@TonyR, @c_hris
Yep, thats my dilemma, I also have a finished basement so drilling a hole 2 feet away is not really an option for me unless i am willing to mess up some drywall and ceiling.

@TonyR
I have a couple of questions regarding your answer:
1) When you said shield, im assuming you are referring to the inner shield of the cable, how can i connect that to the ground without cutting the outer shield of the cable.
2) I know this is going to sound dumb but what should i use if not a rj-45

My plan was to run a cables directly from the nvr to each camera, is this a bad idea?
Then try the STP in the hole with the line voltage conductors and tie one end to earth ground as I suggested.

1) If the shield is braided, pull back enough to splice a wire onto it to be tied to the earth ground. If it's a copper drain wire under a metallic jacket, then tie the drain wire to earth ground.
2) By "a RJ-45 for STP" I meant a metallic RJ-45 with a lug that it connected to the STP's shield or drain wire. So to NOT ground one end, I'd use a PLASTIC RJ-45 for UTP.
 

peste19

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Would choosing a cat 5e or a cat 6 make any difference in interference since one has more bandwidth then the other?

I have been looking at cables, i did some research and it seems that it need to have these specs:
-outdoor rated, cmx
-stp
-solid copper​

Is there any branch and/or cable u recommend? i was looking at the monoprice however it seems buyers complained that the rj45's dont fit it.

Other then interference, is there any other problem that might arise from this?


thanks in advance
 
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