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Topic # 204338 28-Sep-2016 09:36
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Sorry if this should be in a different forum, I wasn't sure where to put it.

 

We're installing a new server rack in our office, and I unfortunately didn't realize until it arrived that the ground bonding kit is a separate purchase. The kit is essentially just a bunch of copper grounding straps to connect all the different rack components together (side panels, doors, etc) before then bonding the rack to the building's ground.

 

The kit seems rather pricey for what it is, and has a 3 week lead time.

 

I thought I could just make up the appropriate grounding straps myself, but am unsure of the type/thickness wire I would require. Our electrician will be in sometime in the next few days, but I'd like to get a head start if possible.

 

All components in the rack will be powered from two HP R3000 UPSs, which are each powered by a 16A wall socket (each on a separate circuit).

 

Thanks for the help.





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  Reply # 1641601 28-Sep-2016 10:49
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Check to see if there are any warranty issues with not using the correct cables (as foolish as this may seem).

 

You could look at using a battery lead from the likes of supercheap auto if you are looking for a low resistance, high current capacity cable. Having said that, the insulation may not be rated to a high enough voltage.
If the official kit is just bare copper cable or strap though this wouldn't matter.

 

 

 

Edit - Something like this

 

http://www.supercheapauto.co.nz/Product/SCA-Battery-Lead-15-Lug-Lug/15021

 

 

 

Edit 2

 

Probably a bit overkill for within the rack. Was thinking for between racks.

 

 


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  Reply # 1641823 28-Sep-2016 13:33
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How much current do you want to handle? That's the basis of wire diameter.

 

How much voltage is the basis for insulation.

 

 




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  Reply # 1641871 28-Sep-2016 14:49
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frankv:

 

How much current do you want to handle? That's the basis of wire diameter.

 

How much voltage is the basis for insulation.

 

 

 

 

I read that you should cater for the highest voltage/amperage device, so I guess 240V @ 16A?


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  Reply # 1642149 28-Sep-2016 22:42
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IIRC at my last firm in NZ, everything was bonded with 6mm earth wire.


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