UL 1283 PVC Internal Wiring Wire 2 AWG — Heaviest Conductor in the Style, 105°C at 600 Vac
UL 1283 in 2 AWG is a single-conductor internal wiring wire with extruded PVC insulation, rated 105°C maximum at 600 Vac, available in solid, stranded or braided conductor construction. At 2 AWG this is the heaviest conductor the style covers — the upper boundary of Style 1283’s 8–2 AWG range and the largest cross-section CableApex supplies under this UL recognition. It serves main incoming feeds, primary bus connections and high-current internal distribution runs inside equipment enclosures. CableApex supplies UL 1283 2 AWG as a UL Recognized Component — file on record.
What the 60-mil Wall Means at 2 AWG
Style 1283 applies a single insulation specification — 60 mils minimum average, 54 mils minimum at any point — across its entire 8–2 AWG range. At the fine end of that range the wall is thick relative to the conductor; at 2 AWG the proportion inverts, and the same 60 mils produces a comparatively lean profile around a large conductor. The practical result is a heavy-current wire with a smaller finished outside diameter than a comparable conductor carrying a scaled-up wall would have. In a densely populated enclosure where several 2 AWG runs share a wireway or pass through a common bushing, that difference in overall diameter directly affects how the wiring can be routed and how much fill capacity remains for other conductors.
UL 1283 2 AWG Specifications
| Item | Specification |
|---|---|
| UL Style | 1283 — single conductor with extruded insulation |
| Temperature Rating | 105°C maximum |
| Voltage Rating | 600 Vac; optional tag: 2500 V peak — for electronic use only |
| Conductor | 2 AWG, solid or stranded, or braided (40–20 AWG strands); style range 8–2 AWG |
| Insulation | Extruded PVC, 60 mils minimum average thickness, 54 mils minimum at any point |
| Flame Rating | Horizontal flame; VW-1 vertical flame test available |
| Oil Rating | Optional — 60°C or 80°C oil resistant |
| UL Recognition | UL Recognized Component — file on record |
| Marking | Per UL Subject 758 marking requirements |
| Permitted Use | Internal wiring; tags may indicate 2500 V peak — for electronic use only |
| RoHS / REACH | Documentation available on request |
Conductor Construction and Installation at Heavy Gauge
| Construction | Handling at 2 AWG | Best suited to |
|---|---|---|
| Solid | Very stiff; requires forming tools to shape | Short straight runs, fixed bus links |
| Stranded | Manageable bend radius; standard lug compatible | General heavy internal feeds |
| Braided (40–20 AWG strands) | Notably supple for the gauge; tightest radii | Congested routing, serviceable connections |
At 2 AWG the choice of construction has a larger practical impact than at any finer size in the style. Solid conductor at this gauge is difficult to route by hand and generally reserved for short, straight bus links formed off the equipment before installation. Stranded is the default for most heavy internal feeds. Braided construction, built from 40–20 AWG fine strands, remains genuinely flexible even at 2 AWG and is the construction to specify where the conductor must turn corners inside a crowded enclosure or be disconnected and refitted during maintenance. Termination hardware should be selected to match the chosen construction, as lug barrels sized for stranded conductor may not accept a braided conductor of the same nominal AWG without verification.
Applications
Within its permitted use — internal wiring, with the optional 2500 V peak electronic use tag — UL 1283 2 AWG suits main incoming supply conductors, primary bus connections, and high-current distribution runs between main terminal blocks and downstream sub-panels inside equipment enclosures operating at up to 600 Vac with ambient temperatures reaching 105°C. Where the tag marking 2500 V peak — for electronic use only is required for internal electronic circuits, specify it at time of order. Where the wiring contacts oil inside the equipment, the optional 60°C or 80°C oil-resistant rating applies. Equipment-type-specific installations such as machine tools or control cabinets fall outside the explicit permitted use description; confirm application suitability before specifying for those end uses.
Key Features
- Heaviest conductor size in Style 1283 — upper limit of the 8–2 AWG range
- 60 mils average wall gives a leaner finished diameter at large cross-section
- Braided construction stays flexible even at 2 AWG for congested routing
- 105°C maximum; optional 60°C / 80°C oil resistant
- Horizontal flame; VW-1 vertical flame test available
- UL Recognized Component — file on record
Request a Quote
CableApex supplies UL 1283 2 AWG from 100 m per color in solid, stranded or braided conductor construction and responds to B2B inquiries within 12 hours. Specify conductor construction, 2500 V peak tag option and oil rating if applicable when submitting your inquiry below.
