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How to perform network grounding ?

Posted on 2008-10-17
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Last Modified: 2008-10-19
Hi friends !

I am working in an educational institute as network administrator. Our institute is going to be shifted in the newly constructed building that has ground floor, first floor, second floor and third (last) floor.

On ground floor, we have four big computer laboratory rooms where in each room we have to place 80 PCs.

I have the major responsibility to design and install the network as management doesnt want to give this task on contract. (We have just purchased the items from tender process).

Now, my main concern is regarding Network Grounding. I have strong knowledge on servers and network administration but network installation with grounding is somehow new for me.

You see, we have received the following items for grounding purpose from the company who won the tender for item delivery:

1. Surge Arrestor Tetrapolor 40KA
2. Grounding Cable (6mm)                  
3. Copper Grounding Bars
4. Silver Grounding Bars
5. Accessories for installation (Charcoal, salt, sand&) in lot

Apart from these, in each Computer Laboratory, we will have:

1. Rack Mount Cabinet with Cable Manager, Patch Panel and PDUs etc.
2. 24-port D-link Switches
3. CAT6 UTP Cables (I don't know how to ground these cables)

Now, I want to know how to perform Network Grounding for better network performance. How to use the materials and items that are delivered. Do we need something more in this item list. And also, how to ground CAT6 cables ?

I really need your help. Please give your kind support.

Regards,

Hemant
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Question by:JatinHemant
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Expert Comment

by:kdearing
ID: 22740318
Grounding is normally done by your cabling guys.
The smart decision is to let a qualified cabling contractor do it.
National and local electrical codes must be followed.
If not done properly, your entire grounding system is useless.

With that being said...
  The only cabling that needs to be protected is anything that enters/exits the building
  Make sure all rack/cabinets are grounded
  Make sure all UPS's are grounded
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Author Comment

by:JatinHemant
ID: 22741608
Hi kdearing !

Thanks for your comment. You see, electrical grouding will be done by our qualified electricians and we will ground our racks, electrical and network equipments.

But when you say that Grounding will be done by our cabling guys, I can't understand that. You see, we are the one who are going to install the network and our management doesn't want to give this work on contract. So how can we arrange someone to ground only the network.

And, I want to know what is the use of that Surge Protector. Does it also come in Electrical Grounding.

I am not understanding the relation and difference between Electrical Grounding and Network Grounding ?

Please clear my doubts.

Regards,

Hemant
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LVL 13

Expert Comment

by:kdearing
ID: 22742760
It sounds like your electricians are taking care of the grounding. I have no idea why you received that other grounding supplies.
The only other thing you need to worry about is surge protection on any wires coming into the building.
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Author Comment

by:JatinHemant
ID: 22745371
Thanks for the reply.

Yes our electrician will perform Electrical Grounding. And you mean to say that...To make network grounded, we only need to give ground to the network equipments including Routers, Switches, Patch Panels and Racks. Then yes, our electrician will give us ground point near the racks in each lab.

It means there is nothing special in network grounding. It is the same as grounding electrical / electronics items like TV, Computer etc. Am I right ?

Please clear my doubt. And also tell if there is anything, I am missing regarding this issue.

Regards,

Hemant
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Accepted Solution

by:
kdearing earned 500 total points
ID: 22745696
Yes, you are correct.

Also note that you don't normally need to ground the network equipment itself.
The power cables themselves provide a ground plus the fact that they are mounted into a rack or cabinet which provides an additional chassis ground.

Provided your racks and cabinets are properly grounded, the only items you need to concern yourself with are UPSs and any free-standing (not physically mounted) equipment.
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Author Comment

by:JatinHemant
ID: 22747440
Thanks kdearing !

One thing more...you didn't tell anything about the Surge Protector. What is that ? and where it is used ? How many Surge Protectors we need as we have 4 labs with 80 computers in each lab. Or we just need one Surge Protector.

Regards,

Hemant
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LVL 13

Expert Comment

by:kdearing
ID: 22748375
The Surge Protectors are used for lightning protection on any wires entering/leaving the building before they connect to any device.
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