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Grounding An Electrical Service Panel
I understand that a residential service panel requires 2 sources for
grounding. I was looking at a newly installed panel the other day and I'm not sure that it was installed correctly. This panel has a neutral bar on both sides of the panel and ground bar on the right hand side only. At the electric meter on the side of the house, there are 2 bare copper wires running down the wall into the earth. These wires were existing prior to the installation of the new panel. They look like this: http://www.altfab.com/library/large/...TR-GRND-02.jpg When the new panel was installed, a new ground wire was run from within 5' of the water meter to the neutral bar of the panel. The neutral bar is bonded to the panel with a large green screw next to the incoming service neutral lug. I believe that this part is OK. However, this is the part that I'm not too sure about: Above the panel, there a ground wire clamped to a water pipe. This wire was there before the new panel was installed. The wire was pulled into the new panel attached to the ground bar. Does that wire count as a second grounding point for the panel or is it essentially the same point as the new ground that was run from the water meter to the panel? Shouldn't I be seeing something that directly connects the ground wires at the electric meter to the panel? |
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