UL 3304 High Voltage Ignition Wire — 200°C / 10,000V AC / Silicone Rubber + Fiberglass Braid
UL AWM Style 3304 is a single-conductor silicone rubber insulated wire with a fiberglass braid outer covering, recognised under UL Subject 758 specifically for electronic ignition applications in gas ranges and gas or fuel oil burner systems. Rated at 200°C and 10,000V AC, with a 40 mils minimum average silicone rubber insulation wall, it is intended for protected internal wiring of electronic ignition systems where the wire is protected from damage during handling, installation, and servicing of the appliance.
The silicone rubber insulation provides dielectric strength suited to 10,000V AC ignition pulse duty, while the fiberglass braid outer covering provides mechanical protection during installation and service routing. For the dual-layer silicone construction at the same 10,000V AC rating, see UL 3573.
Technical Specifications — UL AWM Style 3304
| Parameter | Specification |
|---|---|
| UL AWM Style | 3304 |
| UL Subject | 758, Section 3 |
| Temperature rating | 200°C maximum |
| Voltage rating | 10,000V AC |
| AWG range | 22 AWG – 12 AWG, solid or stranded round |
| Insulation material | Extruded silicone rubber (SR) |
| Min avg insulation thickness | 40 mils (1.02 mm) |
| Min insulation at any point | 36 mils (0.91 mm) |
| Outer covering | Fiberglass braid |
| Flame rating | Horizontal flame |
| UL recognition | UL Recognized Component — file on record |
| Permitted use | Internal wiring of electronic ignition or similar application in gas ranges or gas or fuel oil burner systems — protected from damage during handling, installation, and servicing |
| Colour | Natural fiberglass (off-white); custom available on request |
| Packaging | 25 m / 50 m / 100 m coils; cut to length from 1 m |
AWG Reference Table
| AWG | Conductor type | Nominal cross-section | Approx. OD (mm) |
|---|---|---|---|
| 22 AWG | Stranded | 0.325 mm² | 3.5 |
| 20 AWG | Stranded | 0.519 mm² | 3.8 |
| 18 AWG | Stranded | 0.823 mm² | 4.2 |
| 16 AWG | Stranded | 1.31 mm² | 4.7 |
| 14 AWG | Stranded | 2.08 mm² | 5.3 |
| 12 AWG | Stranded | 3.31 mm² | 6.0 |
Key Features
Electrical and thermal
- 10,000V AC rating — covers the voltage range of standard electronic ignition transformer outputs
- 200°C maximum — suited to the elevated ambient temperatures found in gas appliance ignition lead routing paths
- 40 mils minimum average silicone rubber wall — per UL Style 3304 construction requirements
- Self-extinguishing horizontal flame rating
Mechanical and installation
- Fiberglass braid outer covering — mechanical protection during installation and servicing
- Flexible silicone rubber core — suitable for routing in confined appliance enclosures
- Protected internal routing as required by UL permitted use
- 22–12 AWG range covers standard ignition lead conductor sizes
- Cut-to-length supply from 1 m for OEM assembly
- UL Recognized Component — AWM Style 3304, file on record; construction verified to UL Subject 758, Section 3
- Permitted use — internal wiring of electronic ignition or similar application in gas ranges or gas or fuel oil burner systems, where protected from damage during handling, installation, and servicing
- Silicone rubber insulation — maintains flexibility across the operating temperature range; suited to appliance ignition lead duty
- OEM assembly ready — available pre-cut to specified lengths with stripped ends for direct harness assembly
Common Applications
Gas range and cooktop ignition leads
UL 3304 is used as the internal ignition lead connecting the electronic ignition control module to the spark electrode at each burner position in gas cooking ranges and cooktops. The wire routes through the appliance body in a protected internal path. Confirm ignition system output voltage and routing conditions before specifying.
Gas water heater and boiler ignition wiring
Used as internal ignition lead wiring in residential and commercial gas water heaters, boilers, and combination heating units where the wire is routed within the appliance enclosure in a protected path. The 200°C temperature rating covers the elevated ambient temperatures found in combustion chamber enclosure routing.
Industrial gas burner systems
Specified for protected internal ignition lead routing in industrial gas burner assemblies used in process heating, drying ovens, kilns, and industrial furnaces. Wire routing must be protected from mechanical damage during installation and servicing as required by the UL permitted use.
Fuel oil burner ignition
Used as the high voltage lead from the ignition transformer to the spark electrodes in fuel oil burner assemblies for residential and commercial heating boilers. The wire must be routed in a protected internal path within the burner enclosure.
Other applications
- Gas barbecue and outdoor heater electronic ignition leads — protected internal routing
- Infrared gas heater ignition systems
- Commercial catering equipment ignition wiring
UL 3304 vs UL 3573 — Construction Comparison
| Property | UL 3304 | UL 3573 |
|---|---|---|
| Temperature rating | 200°C | 200°C |
| Voltage rating | 10,000V AC | 10,000V AC |
| AWG range | 22 AWG – 12 AWG | 22 AWG – 12 AWG |
| Insulation | SR 40 mils min avg + fiberglass braid | SR 30 mils inner + fiberglass braid + SR 10 mils outer |
| Construction layers | Two layers — SR insulation + braid | Three layers — SR inner + braid + SR outer jacket |
| Permitted use | Gas ranges / gas or fuel oil burner systems — protected from damage | Same — alternative three-layer construction |
Ordering Information
Select AWG size and required length from the product variants above. Pre-cut lengths with stripped ends available for OEM assembly orders. Standard stock in 18 AWG and 20 AWG; other AWG sizes available — confirm availability and lead time at enquiry stage. Minimum order: 100 m per specification.
UL recognition documentation and material conformance certificates available on request. Contact us for a quotation within 12 hours.
