How to find the right Electrical Grounding Bars AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Electrical Grounding Bars
- Panel-specific kit
- Buy the ground bar kit listed by the panel's manufacturer, or one UL Classified for that panel. It must mount to the panel's pre-drilled, tapped holes. Bars drilled into panels or mounted in unapproved spots void the listing and may not bond properly to the enclosure.
- Terminal count
- Count your equipment grounding conductors and add spare terminals. Most codes allow only one conductor per terminal unless the bar is marked otherwise. Running out of terminals leads to doubled-up conductors, which inspectors cite.
- Wire range and material
- The terminals must accept your largest grounding conductor and be rated for copper and/or aluminum as needed. Larger conductors, such as feeder grounds, often need a larger lug position.
- Separate ground and neutral in subpanels
- In a subpanel, mount a separate ground bar bonded to the enclosure, and isolate the neutral bar by removing its bonding screw or strap. Bond neutral to ground only at the service. Bonding neutral and ground in a subpanel puts neutral current on grounding paths, which creates a shock hazard.
Brands that matter
- Square D (Schneider Electric): Ground bar kits for QO and Homeline load centers.
- Eaton: Ground bar kits for BR and CH load centers.
- Siemens: Ground bar kits for its load centers, also used in many Murray panels.
- GE (ABB): Ground bar kits for PowerMark load centers.
- Leviton: Ground bars for its own load centers.
What to avoid
- Generic bars mounted with self-drilled holes or sheet-metal screws.
- Putting more than one conductor under a terminal that is not marked for it.
- Leaving the neutral bonded in a subpanel after adding a ground bar.
Questions
Can grounds and neutrals share the same bar?
At the main service panel, usually yes, within the bar's terminal rules. In a subpanel, no: grounds and neutrals must be on separate bars.