I have a question I am no elect expert I am running a 100 amp to my new garage I live in a double wide there is a place for a breaker to feed a garage on the disconnect out side panel that feeds my double wide. I installed a 100 amp disconnect on a pole by my garage and ran service wire to my garage put in 100 amp breaker box, my question is I put a ground rod at the 100 disconnect ar the garage, do I need another ground rod for the 100 amp breaker box inside, looks like the one outside would be ok since the ground wire for the service hooks in outside on the disconnect box. also does the equipment ground also hook to the ground bar. thanks for the help Ray in kentucky
ground rod
- Thread starter Ray Adams
- Start date
wyliesdiesels
Well-known member
Yes u need ground rods @ detached structures...
Did u run 4 wires to the subpanel?
What size and type of wire did u use?
The GEC from your rods connects to the subpanel ground bar.
Make sure the neutral bar is isolated from the panel enclosure and ground bar- check for bonding screws....
Can u post some pics? Pictures are easier than words...
Did u run 4 wires to the subpanel?
What size and type of wire did u use?
The GEC from your rods connects to the subpanel ground bar.
Make sure the neutral bar is isolated from the panel enclosure and ground bar- check for bonding screws....
Can u post some pics? Pictures are easier than words...
legotech7
Active member
I just did this yesterday. Subpanel from the main disconnect from house to the garage. Yes I added a grounding rod to the subpanel, and am considering adding another separated 8 feet from the first, as added insurance......
pattenp
Well-known member
The second rod may be needed to satisfy code, not just for a feeling of added safety. Also the rods only need to be at least 6ft apart, but 8ft is good.
Thanks for the reply, my first mistake was I ran three wire without the green wire second mistake I did not remove the bar that ties the neutral and the ground together. now if I am right I drive another ground rod 8 foot from the first ground rod and tie it to my ground wire and the other ground rod is for my neutral also adding a green wire to my ground. is that right for my sub panel,a lot to think about. Ray in Kentucky
justsam
Well-known member
NO! at least in regard to attaching the neutral to a ground rod.
You tie the two ground rods to one another, and connect them to the green or bare ground. You are correct in that the ground and neutral are to be isolated in the panel.
It's what Wylie said in post #2.
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my cable coming in has three wires two hot 1 bare wire it is in the big lug going to ground then copper wire goes to ground rod that is my disconnect box all three line goes to my breaker box where does my green wire go does it go to another ground rod sorry i just can get my head around this.Thanks
wyliesdiesels
Well-known member
Again pics would be VERY helpful for us.
Does this wire go underground? What kind of wire is this? Does it have an outer jacket?
Since youre in a double wide Im assuming the garage is detached. Also, u said bare ground- the only cable that has a bare ground is SER or SEU which SHOULD NOT BE RUN UNDERGROUND.
To me it sounds like u ran SER.
If this is the case then u need to replace the wire!
Theres a lot of red flags here...please post pictures...
When did u run this wire? After 2008? Im assuming u just ran the wire and If so, u used the wrong wire. It shouldve been 4-wire- 2 hots, neutral and ground...
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running the green ground wire by itself to the ground bar and to the neutral in the disconnect box. I hope that is ok. thanks also can I drill a hole in the concrete block to run the solid copper wire to the ground rod. thanks for the help. Ray
wyliesdiesels
Well-known member
Ray can u please answer the previous questions i asked. By the way u describe things, it appears u ran the wrong wire. And u have a number of other issues. Can u take some pics please and post them here?