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Another subpanel grounding question
(Korey Atterberry) wrote:
Hey all-
First off, I apologize for asking a question that seems to be asked
a lot around here. I've been reading posts on the subject for about 2
hrs this morning, but I'm missing something.
My situation: I have a main panel in my house, and I have an
attached garage which my dad and I put a 60amp subpanel in. Now I
know that I need to keep the neutral and ground separate in this
subpanel (I've seen LOTS on this topic), but what I'm missing is,
where do I connect the grounding bar in the subpanel? Grounding rod,
ground wire back to the main panel, don't need it?
The grounding bar screws into the box, there should be a few small holes
tapped into them, so that the ground bar can bolt right in.
So to correct the situation, I presume I need to get a grounding bar
kit for the subpanel and hook the branch circuit grounds to it
(keeping the neutral isolated from the ground). But what do I hook
the grounding bar to? Do I need a grounding rod or a ground wire back
to the main panel?
It connects to the metal electrical box, via the mechanical connection
of the screws that hold it to the box.
If you can not get one that fits properly, one can be added with
self-tapping sheet metal screws, which make a good mechanical
connection.
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