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[8023-POEP] Query of Protection for PoE

Title:
Hi,

This is Mukundan from madras, India.

We are implementing PoE in our Metro Ethernet Switches.

Thanks for this mail on the telecom cabling standard for DC power requirements! We are checking on what is the protection /safety procedure to be implemented for PoE protection in the designs. ie, when we say PoE, the concept is to power remote products / appliances and this cabling could be across buildings / intra building.

IEEE 802.3af as such does not indicate on the GR / ITU-T standards like GR1089 / K.21 / K.20 power crossing requirements. Indoor cabling has more issues with power crossing than lightning whereas outdoor ethernet cabling is prone to lightning.

The PoEplus is striving for nearly 40watts of power, which exaggrates the requirement for a secure cabling infrastructure especially burn proof in case of short circuiting - an extreme state of power crossing.

The Query: Whether the meeting proposed on the cabling structure can take in this                                dimension of query ?
                                                        or
                   Whether the interims session meeting will be the appropriate forum?

Thanks and Regards
Mukundan

Michael McCormack wrote:

I apologize for the late notice; however, I am giving as much as I have received . . .

There will be a meeting this evening to determine if a response is warranted from the 802.3 to the TIA regarding their latest draft of " P-4425-AD6-D (TIA/EIA-568-B.1-6) 'Commercial Building Telecommunications Cabling Standard Part 1: General Requirements. Addendum 6: Additional Cabling Requirements for DC Power'  " and if a response is warranted, then what the response should be.  This response needs to be drafted from the viewpoint of the existing 802.3 standard.  The meeting will take place in the Windsor Room of the Hyatt Hotel this evening at 6:00 PM Vancouver time.

All interested parties are invited to attend; however, I would like to extend a special invitation to anyone who has worked on the current specification (i.e. worked on 802.3af) and / or has crafted previous responses to previous revisions of the TIA document to please make every effort to attend this meeting.

Mike