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Load Center Bus Bar Burhans 02-08-2005
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Posted by Terry on February 9, 2005, 8:35 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.

Presuming this is your main and/or only circuit breaker panel? That is; it
is the same panel containing or immediately following your main circuit
breaker/fuse for the whole service?
My understanding is that neutrals are grounded only once at the main panel?
Neutrals are not grounded in any sub-distribution panels?
In separate distribution panels, or load centres, there are for example two
additional in my house (one in the kitchen area, one in the storeroom-garage
area), the grounds and the neutrals must be separate? Each panel has its
grounding (and feed) conductor/s back to the main service panel.
Or have I misread something?
My personal feeling would be to keep grounds and neutrals on separate
strips.
TIA




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


Thanks everyone for the information. I have decided to purchase the GE
Grounding Kit specified by the box(since it is an older box it is very hard
to find). Since the Live 200Amp Wire comes in from the bottom of the box and
raps up to the 200Amp Breaker on the left and the ground wraps to the
terminal on the right I can not install the Grounding Kit on either side.
There is a spot on the bottom of the box but within the box where there are
holes I could install the grounding bar. I am going to take the new circuit
grounds I am installing and run them to the newly installed Grounding Bar.
Thank you for all your help. I hope to have the new breakers & grounding bar
installed later in the week.

>
>> 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.
>
> Presuming this is your main and/or only circuit breaker panel? That is; it
> is the same panel containing or immediately following your main circuit
> breaker/fuse for the whole service?
> My understanding is that neutrals are grounded only once at the main
> panel? Neutrals are not grounded in any sub-distribution panels?
> In separate distribution panels, or load centres, there are for example
> two additional in my house (one in the kitchen area, one in the
> storeroom-garage area), the grounds and the neutrals must be separate?
> Each panel has its grounding (and feed) conductor/s back to the main
> service panel.
> Or have I misread something?
> My personal feeling would be to keep grounds and neutrals on separate
> strips.
> TIA
>




Posted by toller on February 10, 2005, 4:26 am


> 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.
>
Obviously an accidental disconnection of a neutral leaves a hot with no good
way back to ground, other than through a person unlucky enough to be
touching it, if it is somehow shorted. A 3wire dryer circuit is
particularly dangerous because then the whole frame is hot, and it is often
used when wet.
But wouldn't the normal consequence just be that a circuit no longer works?
Except in odd circumstances, is really isn't all that dangerous, other than
the dryer example. There is no real exposure to equipment damage is there?
Or am I missing something?




Posted by zxcvbob on February 10, 2005, 2:38 am


toller wrote:
>>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.
>>
>
> Obviously an accidental disconnection of a neutral leaves a hot with no good
> way back to ground, other than through a person unlucky enough to be
> touching it, if it is somehow shorted. A 3wire dryer circuit is
> particularly dangerous because then the whole frame is hot, and it is often
> used when wet.
> But wouldn't the normal consequence just be that a circuit no longer works?
> Except in odd circumstances, is really isn't all that dangerous, other than
> the dryer example. There is no real exposure to equipment damage is there?
> Or am I missing something?
>
>


Maybe it's because whatever is plugged into that circuit will appear to
be off (and not working), and the unsuspecting handyman may encounter
the energized hot wires when trying to fix the problem. Or something
like that.

Bob


Posted by NoSpamFANatic on February 10, 2005, 2:52 am


Any manufacturers grounding blocks should fit, NEVER DOUBLE GROUND unless
you want insurance cancellations after the fire.
Home Depot has em for a couple bux.
> > 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.
> >
> Obviously an accidental disconnection of a neutral leaves a hot with no
good
> way back to ground, other than through a person unlucky enough to be
> touching it, if it is somehow shorted. A 3wire dryer circuit is
> particularly dangerous because then the whole frame is hot, and it is
often
> used when wet.
> But wouldn't the normal consequence just be that a circuit no longer
works?
> Except in odd circumstances, is really isn't all that dangerous, other
than
> the dryer example. There is no real exposure to equipment damage is
there?
> Or am I missing something?
>
>




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