On 4/25/2013 7:13 PM, wrote:
On Apr 25, 4:21 pm, "John Grabowski" wrote:
I have a Siemens 100-amp main panel (Catalog #: S2020B1100), and it only
has one neutral/ground bar. The neutral/ground bar is on the right side of
the panel.
I am trying to figure out if I can add another neutral/ground bar on the
left side and, if so, how to do that.
The information about Siemens service panels is located at:
http://www.hqs.sbt.siemens.com/gip/g...ets/US/SIILV/S....
This panel is a Siemens "ES" Series Load Center, and it has 20 circuits.
On page 3 of the above online guide it says, "Single sided neutral on 24
circuits and below". So that explains why the panel that I have only has
one neutral bar installed.
My question again is, can I add another neutral/ground bar on the left
side and, if so, how do I do that? Thanks.
*Drill and tap two 8/32 holes. Mount the ground bar. Run a number 8 or 6
wire from the new ground bar to the existing ground/neutral bar.- Hide quoted text -

- Show quoted text -
But what he originally asked for was adding a second
"ground/neutral bar" on the other side of the panel. You can add a
ground bar and I don't think he needs to drill any holes, as Siemens
has one for the panel, so it should already have compatible holes.
But I think that's only code compliant as an additional ground bar,
meaning you can't use it for neutrals..... Is that correct? If
he moves some ground wires from the existing neutral/ground
bus to the new bar though he would free up locations for more neutral
wires.

Also, can't you put more than one ground wire under a screw
in at least some panels? That alone might solve the problem?
If the bar is threaded into the panel, it would suffice as a ground bar
only. If as John said, you run a #6 or 8 from it to the neutral bar,
it'll work for both.
You can put two grounds under one screw is some panels as well