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Subject Author Date
Load Center Bus Bar Burhans 02-08-2005
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Posted by Burhans on February 9, 2005, 8:28 am


The instructions Printed on the GE Box are all I have. I just dont
understand why the Neutral/Grounding Bar would only allow 42 Wires but the
Box can hold a Max of 40 Circuit Breakers. If they were planning on filling
the Box then the Neutral/Grounding Bar would of had to allow up to 80 Wires.

Thanks Everyone

> It is code to install two grounds under one screw, but not two neutrals,
> and you can always add a new bar
>> No. The concern is that is that if it pulls out you will lose both
>> neutral and ground.
>> By all means check to see if your box allows more than one wire. If it
>> does, put two grounds from different circuits together.
>>
>
>




Real Goods Solar, Inc.
Posted by Matt on February 9, 2005, 10:51 am


For the same reason hot dogs come in packs of 8 and buns come in 12s,
silly.



Posted by Burhans on February 9, 2005, 11:00 pm


To Append to my Posting

I have the ability to install an Equipment Grounding Kit in the Box but was
wondering how it is installed. I understand it is mounted to the Load Center
but how is it grounded?

Thanks

> For the same reason hot dogs come in packs of 8 and buns come in 12s,
> silly.
>




Posted by SQLit on February 9, 2005, 2:13 pm



> My Current Load Center is a GE 200 Amp 40 Space box. On the Left and Right
> side of the Circuit Breakers is a Neutral Bus Bar which also takes the
> Grounds. I am running out of room on the Bus Bar and was wondering if I
> could put the Neutral & Ground together in one slot on the bar? This would
> give me more space in the Neutral/Grounding Bus Bar.
>
> Thanks.
>

check with the manufacture about the ground/neutral bars. Some manufactures
are UL listed for 2 wires of the correct sizes to be under one screw. The
information should be on the instruction on the cover. Just not in very
plain wording. I know my Homeline SQD panel will accept 2-14's or 12's under
the neutral/ground bus.




Posted by HorneTD on February 9, 2005, 10:43 pm


Burhans wrote:
> My Current Load Center is a GE 200 Amp 40 Space box. On the Left and Right
> side of the Circuit Breakers is a Neutral Bus Bar which also takes the
> Grounds. I am running out of room on the Bus Bar and was wondering if I
> could put the Neutral & Ground together in one slot on the bar? This would
> give me more space in the Neutral/Grounding Bus Bar.
>
> Thanks.
>
>

If the instructions in the panel allow more than one wire per terminal
then you may combine that many Equipment Grounding Conductors under each
screw. The US National Electric Code forbids terminating two or more
grounded current carrying conductors; which most of us call the neutral;
in the same terminal. This is to avoid the accidental disconnection of
one circuits neutral while troubleshooting another circuit and the
attendant risk of injury and equipment damage.

"408.21 Grounded Conductor Terminations.
Each grounded conductor shall terminate within the panelboard in an
individual terminal that is not also used for another conductor."
Copyright 2002 the National Fire Protection Association.

The only suggestion that I would have is to obtain the GE add on buss
bars that are used to terminate the EGCs in feeder supplied panels.
There should be no need to bond the add on buss bars to the neutral buss
because the mounting screws will provide adequate bonding if the same
manufacturer's add on buss bars are installed. Putting one add on buss
bar on each side of the panel will allow you to readily terminate all
conductors on the same side of the panel that the conductors enter the
cabinet. That will contribute to a neater installation and avoid the
mingling of branch circuit conductors with service entry conductors.
--
Tom H


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