Grounding Bars

Grounding bars provide a reliable common point to terminate equipment grounding conductors, bonding jumpers, and telecom grounds. They help clear faults quickly, stabilize voltage, reduce electrical noise, and protect people and equipment. Whether you’re outfitting a new panelboard or upgrading an enclosure, a properly sized ground bus delivers a low-impedance path to earth and simplifies maintenance.

You’ll find ground bars in panelboards, switchboards, MCCs, control panels, server and telecom racks, PV combiner boxes, and outdoor enclosures. Materials include high-conductivity copper (bare or tinned for corrosion resistance) and aluminum with stainless hardware. Tinned copper is a smart pick for damp, coastal, or industrial environments; bare copper excels indoors; aluminum offers a cost-effective option where compatible with the conductors and environment. Look for UL 467 listing and alignment with NEC Article 250 to support inspection and safety goals.

Choosing the right product is straightforward:
- Capacity and hole count: match the number of terminations today with room to grow.
- Conductor range and lug type: verify AWG/kcmil sizes, lay-in vs mechanical lugs, and multi-conductor options.
- Mounting: bonded (direct-to-metal) or insulated standoffs for isolated grounding schemes.
- Dimensions: confirm bar length, hole spacing, and footprint for your enclosure.
- Finish and hardware: tinned surfaces, stainless screws, and anti-oxidant compatibility for longevity.
- Accessories: add-on lugs, bonding jumpers, identification labels, and end caps.

Installation tips that save time and callbacks:
- Scrape paint or use serrated washers for a solid bond; torque lugs to manufacturer specs.
- Use anti-oxidant compound with aluminum conductors.
- Keep neutrals isolated in subpanels; bond only at the service disconnect as required by code.
- Tie the ground bar to the building grounding electrode system and verify continuity.

Shop grounding bars, ground bus bars, and ground bar kits to streamline electrical grounding and bonding. Filter by material, hole count, lug range, mounting kit, and certifications to find a durable, code-ready solution for your project.