Neutral Vs Ground Bus Bar

The ground buss is in direct contact with the metal enclosure.

Neutral vs ground bus bar.

Ground bus bar some service panels have a separate bus bar for ground wire connections instead of a neutral ground bus. Neutral is provided by the power company to make the path of electricity closed. You can see this clearly in the picture below as there are multiple neutral wires feeding into a single screw in more than one instance in this spaghetti mess of wires. In any distribution panel there are individual bars for each termination.

Personally i prefer to put them on separate buss bars usually there is one on each side of the box also while not specified in the codes i will never put both the white and ground wires under the same screw. The neutral is isolated from the metal enclosure. As the neutral point of an electrical supply system is often connected to earth ground ground and neutral are closely related. Earth or ground wire is assumed to be at zero potential while the potential of neutral depends upon unbalance between the wires.

A double tapped neutral is when more than one neutral wire is fed into a single screw terminal on the neutral bus bar in the main electric panel. Thank you for your question regarding the separation of the ground bar from the neutral bar in an electrical sub panel it is our pleasure to help. Under certain conditions a conductor used to connect to a system neutral is also used for grounding earthing of equipment and structures. Ground is therefore universal reference which is always taken to be zero potential.

Current carried on a grounding conductor can result in objectionable or dangerous voltages appearing on equipment enclosures. In this case the ground bus is electrically connected to the neutral bus in main service panels only. In an entrance panel both bus bars are grounded to the box. The difference between a ground wire and neutral wire is often misunderstood.