High Temperature Wire for Oven and Heat Equipment Internal Wiring — UL 3135 / UL 5107 / UL 5359
Selecting the correct high-temperature wire for oven applications requires matching the wire’s rated temperature to the actual wire surface temperature at the routing position inside the equipment enclosure — not the oven air temperature or heating element surface temperature. CableApex supplies UL AWM wire across the thermal range required by commercial and industrial oven applications — from UL Style 3135 silicone rubber at 200°C through UL Style 5107 and 5359 mica-fiberglass at 450°C — available under partner-certified UL AWM manufacturing scope. Style-specific UL documentation can be provided according to the ordered construction.
Selecting UL Style by Wire Surface Temperature — Guía de Selección por Temperatura
The table below is a general selection guide based on typical wire surface temperatures at the routing position inside the equipment enclosure. Confirm the applicable UL Style, conductor size, and construction against the UL file data and the equipment’s own design evaluation before ordering.
| Equipment Type | Typical Wire Surface Temp | UL Style (indicative) | Insulation | Voltage |
|---|---|---|---|---|
| Commercial baking oven, food dryer | 120–180°C | UL 3135 | Silicone rubber 200°C | 600V |
| Industrial convection oven, powder coat cure | 160–200°C | UL 3135 | Silicone rubber 200°C | 600V |
| Industrial process heater, plastic injection barrel zone | 200–280°C | UL 5107 | Mica-fiberglass 200°C or 450°C | 600V |
| Ceramic kiln, glass annealing equipment | 280–400°C | UL 5107 / UL 5359 | Mica-fiberglass 450°C | 600V |
| High-temperature furnace, metal processing equipment | 350–450°C | UL 5107 / UL 5359 | Mica-fiberglass 450°C | 600V |
| Oven instrumentation, signal circuits (300V) | Up to 450°C | UL 5128 | Mica-fiberglass 450°C | 300V |
UL AWM High Temperature Wire — Style Specifications
Conductor size, voltage rating, insulation wall, and construction options vary by UL Style. Confirm the applicable construction against the UL file data before ordering.
UL Style 3135 — Silicone Rubber 200°C / 600V
UL Style 3135 uses extruded silicone rubber insulation rated 200°C continuous and 600V AC under UL Subject 758, with horizontal flame rating. Silicone rubber retains flexibility across its rated range, which can assist routing inside oven enclosure frameworks during assembly. It is suited to protected internal wiring in commercial baking equipment, food processing ovens, and powder coating cure systems where the wire surface temperature remains within the 200°C rating and the routing is protected within the equipment enclosure.
| Parameter | Value |
|---|---|
| UL Style | 3135 |
| Temperature Rating | 200°C |
| Voltage Rating | 600V AC |
| AWG Range | 26 AWG – 12 AWG, solid or stranded |
| Insulation | Extruded silicone rubber — 30 mils min avg |
| Flame Rating | Horizontal flame |
| Typical Use | Protected internal wiring in commercial ovens and food processing equipment enclosures |
UL Style 5107 — Mica-Fiberglass 200°C or 450°C / 600V
When wire surface temperatures exceed the 200°C rating of silicone rubber, mica-fiberglass construction is among the UL AWM wire options rated for higher temperatures. UL Style 5107 uses mica tape with glass braid insulation rated for 200°C or 450°C at 600V AC under UL Subject 758, covering protected internal wiring in industrial process heating equipment where the wire surface temperature and routing conditions exceed the silicone rubber range. Mica is an inorganic mineral insulation with thermal stability well above polymer-based insulation materials.
| Parameter | Value |
|---|---|
| UL Style | 5107 |
| Temperature Rating | 200°C or 450°C |
| Voltage Rating | 600V AC |
| AWG Range | 26 AWG – 550 kcmil, solid or stranded |
| Insulation | Mica tape with glass braid — 25 mils min avg mica + 7 mils glass braid (26–12 AWG) |
| Flame Rating | Horizontal flame |
| Typical Use | Protected internal wiring in industrial furnaces, kilns, and high-temperature processing equipment enclosures |
UL Style 5359 — Mica-Fiberglass 200°C or 450°C / 600V, Multi-Conductor Option
UL Style 5359 shares the 200°C or 450°C / 600V rating of Style 5107 but specifies a thinner mica insulation wall at fine gauges — 16 mils minimum average at 30–12 AWG versus 5107’s 25 mils — producing a more compact wire profile. Style 5359 also supports multi-conductor cable assembly up to 1.500 inch OD, which can suit oven enclosure internal wiring where multiple conductors are routed together within the equipment structure.
| Parameter | Value |
|---|---|
| UL Style | 5359 |
| Temperature Rating | 200°C or 450°C |
| Voltage Rating | 600V AC |
| AWG Range | 30 AWG – 4/0 AWG, solid or stranded |
| Insulation | Mica tape with glass braid — 16 mils min avg mica + 7 mils glass braid (30–12 AWG) |
| Multi-conductor | Available — max OD 1.500 inches |
| Flame Rating | Horizontal flame |
| Typical Use | Compact multi-conductor internal wiring in oven enclosures where multiple conductors are routed together |
UL Style 5128 — Mica-Fiberglass 450°C / 300V
For oven and heat equipment internal circuits rated at 300V, UL Style 5128 provides 450°C thermal rating with a thinner mica insulation wall and a more compact wire profile compared with 600V-rated constructions. Optional stainless steel alloy 304 braid available when specified.
| Parameter | Value |
|---|---|
| UL Style | 5128 |
| Temperature Rating | 450°C |
| Voltage Rating | 300V AC |
| AWG Range | 24 AWG – 4 AWG, solid or stranded |
| Insulation | Mica tape with glass braid — 15 mils min avg mica + 7 mils glass braid (24–12 AWG) |
| Optional Shield | Stainless steel alloy 304 braid (when specified) |
| Flame Rating | Horizontal flame |
| Typical Use | 300V internal circuits in oven and kiln equipment enclosures |
Application Examples by Equipment Type
The following are selected examples of oven and heat equipment internal wiring applications where UL AWM high-temperature wire is commonly used. Suitability for each application depends on the specific wire surface temperature at the routing position, the UL Style selected, the construction ordered, and the equipment’s own design evaluation.
- Commercial baking and food processing equipment — protected internal wiring in deck ovens, convection ovens, and food dehydration systems where UL AWM recognition supports equipment compliance for export markets.
- Powder coating and paint cure systems — internal wiring in powder coating cure ovens and paint drying systems where sustained operating temperatures in the 180–220°C range require silicone rubber or mica-fiberglass insulation within the equipment enclosure.
- Plastic processing equipment — protected internal wiring in the enclosure zones of injection molding and extrusion equipment where barrel zone temperatures require mica-fiberglass-rated wire for the internal connections within the equipment structure.
- Ceramic and glass processing equipment — protected internal wiring in ceramic kilns and glass annealing equipment enclosures where wire surface temperatures at the routing position may reach 300–450°C and mica-rated wire is selected for the internal connections.
- Industrial heat treatment equipment — internal wiring in heat treatment furnace enclosures and sintering equipment where 450°C-rated mica wire is selected for internal connections where the routing is protected within the equipment structure.
Insulation Comparison — Selecting by Temperature and Voltage
| Material | Max Temp | Max Voltage | Flexibility | Selected Use |
|---|---|---|---|---|
| Silicone Rubber (UL 3135) | 200°C | 600V | Flexible | Commercial ovens, food dryers, powder coat cure |
| Mica-Fiberglass (UL 5107) | 200°C or 450°C | 600V | Limited — static routing | Industrial furnaces, kilns, high-temp equipment |
| Mica-Fiberglass (UL 5359) | 200°C or 450°C | 600V | Limited — static routing | Compact multi-conductor oven enclosure wiring |
| Mica-Fiberglass (UL 5128) | 450°C | 300V | Limited — static routing | 300V internal circuits; SS304 shield option |
Request a Quote for High Temperature Oven Wire
Send your equipment type, maximum wire surface temperature at the routing position, required UL Style, AWG, voltage rating, and quantity. We will confirm the applicable construction and return a quotation within 24 hours. Wire samples available on request.
