atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services Outside Plant OSP Construction aerial cable building 2 building

I need to get some cat 5 from building A to Building B. Building A has My network. I was thinking of aerial cable. I only need to get lets say one cat 5 over to the other building to continue my network. What kind of system would I need for this. The span from building 2 building is like 30 feet. But I don't know what to use to hold the cable or if there is a system out there.

Thx please inform

You would want a self supporting CAT5, but that's just the start. You sure wouldn't want something in the air without proper grounding and protection. You can use outside plant protectors between the buildings, but I'd also use a secondary low voltage protection for your data networking equipment. This is not going to be cheap, but neither is replacing your computers and data network equipment every time it storms.

anytime ethernet leaves a bldg it should go to fiber

for the reasons bill mentioned .

You could go with a wireless link between buildings

yes the wireless bridge is something I have been thinking about. it is the easy. Would you have some idea on some good wireless products.

Ive seen wireless taken out by lighting strikes as well.

This is a tough one and you do stand a chance of lighting strikes.

CG told customer if he went wireless would not get hit. Well a ground loop from power supply proved him wrong.

Try not to get involved with issue such as these
as the cusomer is gonna due it no matter what you say.

Being an old OSP guy I always think of copper first. You are correct fiber is a lot less prone to this problem. I've heard it said fiber is immune to lightning, but since I've seen so many things happen with lightning strikes I'd like to leave a little room for error.

fiber is glass , glass dosnt conduct electric so no surge problems no need for protection.

as a bonus by using a couple of switchs and media converters you extend the 100 meter coper limitation ,

Could someone please point me to a link were i can buy self supporting CAT5. and the anchor system to hold the wire up

do a google search for aerial cat 5e , heres one

https://www.computercablestore.com/SearchResult.aspx?CategoryID=61

normal cooper you would use these drop wire clamps

https://www.gmptools.com/nf/index_aerialtools.htm

I dont think why would work well for cat 5 e as they would change the oriantion of the strands that define it as cat 5



dont forget your primary and secondasy protectors

:rolleyes:

Just put self support cat 5 in google, you'll find several. The hardware you'll order along with the cable. Again don't put it up without protection, you'll be sorry. The fiber suggestion is even better, one way you'll need protection the other mux's (I would suppose not a fiber expert). So either way will not be cheap. If you just run cable it's going to cost a lot more in the long run.

I have to reiterate what everyone else is saying...make sure the system is properly grounded and has the proper protection or you will be replacing a lot more then just the cable...think of it sort of like Ben Franklin with a kite string except everything connected to the cable is the key.

Definately go with fiber. In the long run, it's probably going to be cheaper. You can buy pre-terminated cables if you don't have the tools to do it yourself. You don't have to worry about lightning protection. A 24 strand fiber cable will give you some options down the road. That single Cat5 might be a bottle neck down the road. Switches with fiber ports and media converters really aren't that expensive.

Wireless is also a good option, especially if you can use a couple of panel antennas pointed out windows. If you don't have to put anything on the roof, you've made things much easier. Still, I think fiber is the best option. Do it once, do it right.

Originally posted by Skunny:
For this distance, normal wireless will work. You probably won't even need a wireless bridge or external antennas. A wireless router and wireless card(s) on the receiving end will be the most economical and safest.

Under no circumstances would I ever fly a LAN across two buildings. You are just asking for trouble. It doesn't even require a direct hit, a nearby hit will generate enough static electricity in the line to cause damage.

The only lightening proof way is fiber.
Wireless outdoor antennas second (but as others have stated), I've seen these taken out as well.

D) All the above

As a former OSP tech, I prefer fiber. Media converters are cheap. If you have to go overhead, they make a self-supporting inner duct just for that purpose. That way no need for fancy strands, cables, or grounding.

Wireless, at that distance, should work with about any normal wireless LAN. But if you want more, there are several good wireless systems that could do the trick and give you maximum speed and bandwidth.

Copper would be the last choice due to the conduit, overhead support, grounding, protection, et al.

Just my experience.

KLD.

I agree with the fiber solution.

About a month ago I ran about 250' of Cat 5e aerial. They do not make a 4 pair cat 5e aerial cable with the support cable built in. :bang:

I had to order the Cat 5e cable. Then I had to pick up 1/4" aircraft steel stranded cable at the local hardware. I straped the cat 5e cable to the steel with UV rated cable ties. I then attached to the poles with 8" eyebolts and used Marconi clamps to secure the support cable to the eyebolts.

I wish they made Cat 5e with the support cable made into the jacket of the cable. That is what I am use to with aerial cat 3.

Does anyone know why this is? Does anyone kow of a source that does in fact make aerial Cat 5e with the support strand made into the jacket? :confused:

Thanks,

250' =76 meters only left you 24 meters for your lan unless you prety much went switch to switch.

I Imagine there isn't much call for the cat5 with strand as most folks would use fiber

They don't because you shouldn't do it!

Understand that it does not even take lightening to cause trouble on the LAN system. Even a high static electricity level in the air can do damage.

Ed, we need you here!

Believe me I tried to go fiber, Customer (big with deep pockets) could'nt afford the extra $850 to go fiber. :rolleyes:

I protected with primary and secondary protection. I explained repeatedly if these pairs are ever damaged, it will all have to be done over again. He understands the risks, so it's off my shoulders. If he's payin for it, I will run whatever he wants.

well I wouldnt have offred the customer the option .

you want to connect bldg A to Bldg B , needs to be fiber heres the quote.

not here's the quote x for copper x +850 to go fiber

Exactly Skip! Don't give them the option. Premade fiber lines have dropped in price quite a bit making it more affordable now.

If you have any phone lines running between the two buildings, you can also salvage a couple of old SDSL modems and use a dry pair of copper between them.

I didnt offer the option. It was his suggestion. Either I do it his way or he will find someone else. I am not one to give money away.

Not all customers are pushovers. This guy knew what he wanted before he ever called.

I am also not in the habit of argueing with my customers. I made the suggestion that it be fiber, he declined. So there ya have it. I got paid to give him what he wanted. When the copper gets blown out, I will get paid again to replace it with the fiber as I had originally suggested.

Understand that it does not even take lightening to cause trouble on the LAN system. Even a high static electricity level in the air can do damage.

Did I tell you how a close lightning strike a few weeks ago fried the ethernet port on our network printer and the router port on the other end?

And- all the wiring is in the building basement!

-Hal

not to mention bandwidth, a single cat-5 isn't good back bone to connect buildings.