Copper bus and ground bars with NEMA CC1 standard hole patterns — 1″, 2″ and 4″ widths with insulators and mounting brackets. Tin plating and plexiglass covers available.
Don’t see your exact size, material, or model? Add it in the notes above — we’ll quote it as a custom order.
Added ✓ — open the cart (top right) to review or send.Mounting holes not included in hole totals · Other sizes available on request · $100.00 minimum order
Nav-Tech bus and ground bars are available in a wide variety of configurations, including hole and slot patterns in unplated copper, tin-plated copper, or stainless steel, with or without mounting brackets and insulators. Plexiglass covers are also available. Non-standard configurations are supported for special applications, delivering durability, flexibility, and compliance with UL standards across a wide range of installations.
Stock patterns use the industry standard hole pattern in accordance with the NEMA CC1 standard and can be used with Nav-Tech lugs with NEMA pads. Add the suffix “PL” for insulators and plexiglass cover.
| Catalog Number | Bar Size (W × L × T) |
|---|---|
| GB1-6 | 1″ × 6″ × 1/4″ — single row of NEMA holes (Pattern H) |
| GB1-12 | 1″ × 12″ × 1/4″ — single row of NEMA holes (Pattern H) |
| GB2-6 | 2″ × 6″ × 1/4″ — double row of NEMA holes (Pattern Z) |
| GB2-8 | 2″ × 8″ × 1/4″ — double row of NEMA holes (Pattern Z) |
| GB2-12 | 2″ × 12″ × 1/4″ — double row of NEMA holes (Pattern Z) |
| GB2-18 | 2″ × 18″ × 1/4″ — double row of NEMA holes (Pattern Z) |
| GB2-24 | 2″ × 24″ × 1/4″ — double row of NEMA holes (Pattern Z) |
| GB4-6 | 4″ × 6″ × 1/4″ — triple row of NEMA holes (Pattern J) |
| GB4-12 | 4″ × 12″ × 1/4″ — triple row of NEMA holes (Pattern J) |
| GB4-18 | 4″ × 18″ × 1/4″ — triple row of NEMA holes (Pattern J) |
| GB4-20 | 4″ × 20″ × 1/4″ — triple row of NEMA holes (Pattern J) |
| GB4-24 | 4″ × 24″ × 1/4″ — triple row of NEMA holes (Pattern J) |
| GB4-36 | 4″ × 36″ × 1/4″ — triple row of NEMA holes (Pattern J) |
Ampacity depends on bar size, shape, ambient conditions, and installation — see the ampacity calculation section of the Ground Bars & Accessories catalog. Individual dimensioned drawings for each catalog number are in the Spec Sheets tab.
All Nav-Tech spec sheets and catalogs are also available on the Specifications page.
Send us your grounding layout or one-line diagram. Our engineering team responds with a quote and lead time — drawings, samples, and engineering support on every project.
