Re: [802.3_RTPGE] Update: Implications of Wire size on maximum available load power

["Matola, Laurence" <laurence.matola@xxxxxxxxxx>]

Automotive wiring construction and size is specified in ISO standard 6722.  The only two sizes specified in the document are (AWG) 26 and 24 gauge.  25 gauge is not specified in the document.  The Document also specifies the maximum resistance at 20C.  For 0.13(26ga) the max resistance is 136 miliohms per meter and 0.22 (24ga) the max resistance is 84.4 miliohms per meter.

 

Larry Matola

Lead Architect

Delphi Corp.

248-813 3063

It isn't what they say about you, it's what they whisper.

Errol Flynn

 

From: sterling [mailto:sterlingv@xxxxxxxxxxxxx]
Sent: Thursday, July 19, 2012 7:36 PM
To: STDS-802-3-RTPGE@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_RTPGE] Update: Implications of Wire size on maximum available load power

 

Yes, the standard metric wire sizes are not equivalent to American wire gauges.

Sterling

On 7/19/2012 7:14 PM, Geoff Thompson wrote:

Sterling-

That is as I understand it
BUT (I believe) that the most commonly used sizes are not precisely equivalent to the commonly used sizes in an AWG environment.

Geoff

On 197//12 1:54 PM, sterling wrote:

Metric wire sizes are specified by the cross-sectional area in mm^2. American wire sizes are specified by a gauge that can be cross-referenced to a cross-sectional area.

In Europe at least, wire sizes are specified using the metric system.
 

On 7/19/2012 4:28 PM, Geoff Thompson wrote:

Yair-
I did not mean the cross sectional area in metric
I meant the wire sizes actually used in the auto industry world-wide.
I suspect those are based on metric sizes, not AWG

Geoff

On 197//12 11:44 AM, Darshan, Yair wrote:

Geoff,

 

Did you look at the updated presentation that I have sent yesterday (rev-001). In page 11 and 12 , right after the AWG wire size line, there is copper area in mm^2, is that what you meant is missing or the other parameter regarding the wire?

 

Yair

 

From: Geoff Thompson [mailto:thompson@xxxxxxxx]
Sent: Thursday, July 19, 2012 8:53 PM
To: Darshan, Yair
Cc: STDS-802-3-RTPGE@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_RTPGE] Update: Implications of Wire size on maximum available load power

 

Yair-
Your tables (pgs 11 & 12) should (at least) also include metric wire sizes (which I am assuming are used by most of the auto industry these days).  I know there are also Japanese wires sizes (also used by Korea).  I don't know if these show up in the auto industry.

Geoff

On 187//12 11:30 PM, Darshan, Yair wrote:

Updates:

-Adding wire area in addition to AWG.

- Minor editorial updates

 

----

Hi All,

 

Please see attached  short summary of the above issue.

I'll appreciate any comments.

Thanks

 

Yair

 

Darshan Yair

Chair

Power over HDBaseT Subcommittee

HDBaseT Alliance

 

Chief R&D Engineer

Analog Mixed Signal Group

Microsemi Corporation

 

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