POE on cat6 cable.How much maximum length possible?

Answered Question
Jan 19th, 2009

This sounds silly but still i ask to be safe in my project.I want to use Cisco 1250 LAP with wireless controller.I want to use POE facility.There are around 7 1250 seried LAP AP.My question is :

01.Suppose the farthest access point (cisco 1250 with wireless n & around 5-6 DBI Omni Antenna) which needs power on poe is 110 meters away from poe switch.I want to use normal cat 6 utp cable to connect the A.P.

(a)How many meters maximum cat 6 utp needed to support poe? How should I check how much is dc voltage loss at the end of the A.P due to long cat 6 cable?

Thanx in advance.

I have this problem too.
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Correct Answer by scottmac about 5 years 3 months ago

100 Meters (90 "in the wall," Solid conductor, + up to 5 meters of jumper cordage ,stranded conductor at each end, is the spec for TIA/EIA 568 structured cabling (and hence, POE).

If this is a commercial project, you may need to adjust your design accordingly, or you would be out of specification, for whatever liability that might present in your situation.

Good Luck

Scott

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Correct Answer
scottmac Mon, 01/19/2009 - 11:57

100 Meters (90 "in the wall," Solid conductor, + up to 5 meters of jumper cordage ,stranded conductor at each end, is the spec for TIA/EIA 568 structured cabling (and hence, POE).

If this is a commercial project, you may need to adjust your design accordingly, or you would be out of specification, for whatever liability that might present in your situation.

Good Luck

Scott

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Posted January 19, 2009 at 11:33 AM
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