Where do you ground a sub panel?

Grounding for a Sub Panel Located in the Same Building



All the ground wires bond back at the main panel together with the neutrals. The sub panel neutral bar or terminal should not be bonded to the enclosure or the ground of the sub panel. The sub panel ground should not have a ground rod tied to it.

Does subpanel need ground from main panel?





Most panels come with a bar joining the two, which is easily removed. Code requires subpanels to have a ground connection that’s independent of the main panel’s.

Where should ground wire connect?

When running a ground wire, it should be connected to the designated place on the device, and then run to a safe location where the energy can be dispersed. This typically means having the wire lead into the earth, which is where this type of wire gets is name.

Can ground and neutral be on same bus bar in a sub panel?

The answer is never. Grounds and neutrals should only be connected at the last point of disconnect. This would be at main panels only.

Should a subpanel have a ground rod?

Yes, any sub panel outside of the main building requires it’s own ground rod and a ground wire back to the main building.

Does a sub panel in same building need a ground rod?





You must, must, must, in every case run a ground ~ from the main to the subpanel. Doesn’t matter if you’re running it 3 feet, to an outbuilding or up a space elevator. You have to run a ground ~ or you are out of Code.

How do you wire a subpanel to a main panel?


Quote from Youtube video: The wire. Into the sub panel from the main panel. So we'll be running our six gauge ground wire. And our feeder wire next this is three gauge like I mentioned earlier anything six gauge or smaller.

How do you ground a main panel?

To add grounding to an existing panel, drive a ground rod into the ground and connect a grounding wire to the main electrical panel. Install new power outlets that have a continuous grounding path back to the grounding rod.

How do you install a ground bar in a sub panel?

Quote from the video:
Quote from Youtube video: Line up your three holes on the ground bar. Two of them on the nubs. And one of them right above the hole for the screw. And put this screw into the ground bar.

Why do you separate the ground and neutral in a sub-panel?



With ground and neutral bonded, current can travel on both ground and neutral back to the main panel. If the load becomes unbalanced and ground and neutral are bonded, the current will flow through anything bonded to the sub-panel (enclosure, ground wire, piping, etc.) and back to the main panel. Obvious shock hazard!

Where do you bond ground and neutral?

Neutral wires are usually connected at a neutral bus within panelboards or switchboards, and are “bonded” to earth ground at either the electrical service entrance, or at transformers within the system.

Should ground and neutral be connected in main panel?

If the main service panel happens to be the same place that the grounded (neutral) conductor is bonded to the grounding electrode, then there is no problem mixing grounds and neutrals on the same bus bar (as long as there is an appropriate number of conductors terminated under each lug).

Does a 60 amp sub panel need a ground rod?



In the same building or attached building no ground rod is required just hot hot neutral ground, with ground and neutral being isolated from each other in the sub panel.

Does a subpanel in a detached building need a ground rod?

The detached structure is required to have its own Grounding Electrode System (GES) i.e. ground rods. The subpanel in the detached structure will have its grounds and neutrals separated.

How do you ground a subpanel in a detached building?

4 Answers

  1. Pull 4 conductors (2 ungrounded (hot), 1 grounded (neutral), 1 grounding) (250.32(B)(1)).
  2. Grounded (neutral) and grounding bus must be separate at sub-panel (250.32(B)(1)).
  3. No need for a GFCI breaker in the main panel, unless your local code requires it.

How do you install a ground rod and wire in an electrical panel?

Steps on How to Connect Ground Wire to Electrical Panel

  1. Ground bar or rod Installation. …
  2. Attach your ground wire to the ground rod. …
  3. Keep the breakers off. …
  4. Remove panel cover. …
  5. Pick a proper knock-out hole. …
  6. Locate neutral bar or grounding bar. …
  7. Connect the ground wire to the bar or rod. …
  8. Finish up.



How far should ground rod be from panel?

NEC Article 250 does not specify a minimum or maximum distance between the main electrical panel and the ground rod. Because the panel must be connected to the ground rod by a buried copper wire, however, best practices suggest that the shorter the distance to the ground rod, the more efficient the ground.