What is the primary application for UL 3304 wire?

According to the official UL 3304 standard, this wire is specifically designed for the internal wiring of electronic ignition systems, such as those in gas ranges, gas burner systems, and fuel oil burner systems.

What are the temperature and voltage ratings of UL 3304?

UL 3304 ignition wire is rated for extremely high voltage up to 10,000 Vac (10KV) and can withstand a continuous maximum temperature of 200°C. It also meets the horizontal flame test requirements.

What is the insulation construction of UL 3304?

It features a robust 40-mil extruded silicone rubber (SR) insulation, which provides superior dielectric strength. The core is protected by an outer layer of durable fiberglass braid.

UL 3304 Ignition Wire Products

This page groups the available UL Style 3304 product pages. UL Style 3304 is a single conductor with extruded insulation, rated 200°C and 10,000 Vac, covering 22 AWG to 12 AWG in solid or stranded round construction. The insulation is extruded SR silicone at 40 mils minimum average and 36 mils minimum at any point, with a fiberglass braid covering.

The products below cover general UL 3304 supply, protected internal routing, burner system wiring, equipment-specific requirements and market-specific purchasing, along with one related-Style comparison guide. Conductor material, plating, detailed stranding, finished dimensions, colour, marking, packaging and required documents are not fixed at Style level and are confirmed by quotation for the ordered construction. For general UL 3304 supply, start from UL 3304 ignition wire for gas ignitor systems.

UL 3304 Wire Specifications

UL AWM Style	3304
Construction	Single conductor with extruded insulation
UL Subject / Section	758, Section 3
Temperature rating	200°C
Voltage rating	10,000 Vac
Conductor range	22 AWG – 12 AWG, solid or stranded round
Insulation	Extruded SR silicone
Minimum average insulation thickness	40 mils
Minimum insulation at any point	36 mils
Covering	Fiberglass braid
Flame rating	Horizontal Flame per the UL Style file; VW-1 vertical flame testing available by confirmed construction and agreed order requirement
Marking	General, per UL Subject 758 marking requirements
Use per UL Style file	Internal wiring of electronic ignition or similar applications in gas ranges or gas or fuel oil burner systems where protected from damage during handling, installation and servicing of the appliance

Available UL 3304 Wire Constructions

The UL Style scope covers 22 AWG through 12 AWG in solid or stranded round construction. Every construction under this Style uses extruded SR silicone insulation at 40 mils minimum average with a fiberglass braid covering — the insulation build is fixed by the Style, and the braid forms the outer surface of the wire.

What varies between orders is everything the Style file does not define: conductor material and plating, detailed stranding, finished outside diameter, insulation colour, wire marking and packaging format. These are confirmed by quotation against the applicable ordered construction. Not every combination of AWG, conductor construction, colour and packaging is continuously stocked — where a requested combination has not previously been produced, confirm feasibility during enquiry rather than assuming availability from the Style scope alone.

Choose a UL 3304 Ignition Wire Product

The product cards below cover several different purchasing situations within the same UL Style 3304 scope:

A general product page for standard UL 3304 supply
Pages focused on burner system internal wiring
Pages focused on protected internal routing requirements
Equipment-specific pages for particular ignition assembly types
Market-specific purchasing pages covering regional documentation and supply arrangements
One comparison guide covering UL 3304 alongside related ignition Styles

They differ in how the construction is specified and in the commercial context attached to a particular order, not in the underlying Style rating. For general supply, the entry point is UL 3304 ignition wire for gas ignitor systems.

Protected Electronic Ignition Applications

The UL Style 3304 file states the use as internal wiring of electronic ignition or similar applications in gas ranges or gas or fuel oil burner systems, where protected from damage during handling, installation and servicing of the appliance.

The protection condition is part of the stated use and applies across all three phases the file names — handling before installation, installation into the equipment, and any subsequent servicing where the wire may be disturbed. It should be checked against the routing design and service access arrangements of the equipment before a construction is specified. The Style rating alone does not establish suitability for a given installation; that is determined by the equipment, the routing arrangement, the ordered construction and the applicable equipment-level evaluation.

UL Marking and Order Documentation

The ordered construction, the applicable certified scope, the actual UL marking applied and the supporting documents must all be confirmed before production. Only products bearing the applicable UL Mark should be represented as covered products.

Where UL, RoHS, REACH or other compliance documents are required, specify them during enquiry so availability can be confirmed for the ordered construction. Minimum order quantity, sample availability, reel length, packaging, delivery schedule and marking are confirmed in the quotation rather than fixed in advance.

Related High-Voltage Ignition Wire Styles

UL 3573 is the closest related Style. The construction difference is the layer arrangement: UL 3304 has silicone insulation with a fiberglass braid covering as the outer layer, while UL 3573 has silicone inner insulation, a fiberglass braid or serve, and silicone outer insulation over the braid. Which construction applies is determined by the equipment design.

UL 1911 is also available within the high-voltage range. Selection between these Styles should be based on the applicable Style file, the voltage requirement, the construction and the equipment design rather than on a single rating figure.

The wider ranges are available under High Voltage Wire and AWM Wire.