690-64 (B)(2) [RE-wrenches]

[William Miller]

<x-flowed>

Steve:

Jeff may have missed the point that if you attach to the busbars on the 
supply side of the main, the rating of the busbars does not matter.  In 
690.64, busbar rating applies only if you choose option B.  If you choose 
option A rating is not a consideration.


William


At 10:03 AM 10/28/2006, you wrote:

>Hi Steve,
>
>Yes, check with the service entrance panel engineers - they can sometimes 
>write a letter rating the bus bar a bit higher than the panel rating and 
>they can guide you on how to tap into the bus itself like William 
>says.  You can also explore changing out the bus bars for ones of higher 
>rating that will fit in the same panel.
>
>Hope that helps!
>
>Jeff C.
>Village Power Design
>
>
>
>>Steve:
>>
>>Are there any extra holes in the buss bars at the main?  We have bolted 
>>on to the buss bars successfully before.
>>
>>William Miller
>>
>>
>>At 12:29 PM 10/27/2006, you wrote:
>>
>>>How are people dealing with this in California?
>>>If your 800 amp service is underground and the meter is on the padmount
>>>transformer and the panel is in the middle of the building what do you
>>>do?
>>>
>>>Tap into a few measley inches of 500 MCM before it hits the bottom fed
>>>main?  Either that or replace the 800 amp with a 1000 amp panel?
>>>
>>>Lousy options if you ask me.
>>>
>>>Maybe people are just setting their breaker and ignoring it.
>>>
>>>
>>>Steve Johnson
>>>LightWave Electric
>>>Nashville, Tennessee


- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------


</x-flowed>