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Re: [802.3_4PPOE] SPI Public Input


Premises-powered refers to any powering scheme where the power is provided by equipment on the premises so that includes IEEE PoE. As you know, there are other powering methodologies that provide power from the premises, and they too would be included.

It would not include powering technologies such as standard telephone service as that power is provided by the carrier or in NEC terminology "Network Powered". This is the subject of Article 830 in the NEC.

Standard Ethernet cables (unpowered) used for communications are not part of this Article 840 and so are unaffected by these changes. Standard communications cables such as Ethernet cables are covered in Article 800.

The terminology used in the NEC is sometimes different than that used by TIA or IEEE and unfortunately this leads to some confusion.

I hope this helps.


On Tue, Aug 25, 2015 at 5:18 PM, Larsen, Wayne <WLARSEN@xxxxxxxxxxxxx> wrote:



Hi Fred,


I suppose that ‘premises-powered’ in the title implies IEEE POE, or a similar powering method.


Does the newly changed section apply only to communications systems that include power, or to all communications systems? 









From: Fred Dawson [mailto:fred.c.dawson@xxxxxxxxx]
Sent: Tuesday, August 25, 2015 3:42 PM
To: Larsen, Wayne
Cc: STDS-802-3-4PPOE@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_4PPOE] SPI Public Input


Hi Wayne,


This section did not deal with any premises powering over Ethernet cables at all, and that is why it was changed in the NEC first draft.


The other changes like the one I attached, expand article 840 from being strictly for optical fiber based broadband communication systems to being for all types of communications cabling systems that are premises powered. This is consistent with the existing title of the section "Premises-Powered Broadband Communications Systems".



I have previously sent all the technical changes. The remaining ones are all languages changes expanding this section to include ethernet and other types of premises powered broadband applications.




On Tue, Aug 25, 2015 at 4:23 PM, Larsen, Wayne <WLARSEN@xxxxxxxxxxxxx> wrote:



Hi Fred,


I think this does add to the discussion and I wish you would continue to distribute them.


Does this cover Ethernet systems that include power and that don’t?








From: Fred Dawson [mailto:fred.c.dawson@xxxxxxxxx]
Sent: Tuesday, August 25, 2015 3:15 PM
To: STDS-802-3-4PPOE@xxxxxxxxxxxxxxxxx
Subject: [802.3_4PPOE] SPI Public Input




This is the main other SPI public input that expands the scope and coverage of Article 840 to match the new title “Premises-Powered Broadband Communications Systems”. 


The remaining PI's submitted by SPI make similar changes to the attached one. i.e. they expand sections of article 840 to include all types of communications systems rather than just optical ones.


I don't plan to send more of these as I don't believe they add to the discussion.


If anyone wants the other proposed language changes please let me know and I will try to extract them.