When a BOM Calls for UL 3135 16 AWG
A bill of materials that specifies UL AWM Style 3135 at 16 AWG is asking for a defined combination: a single-conductor silicone rubber insulated wire, rated 200°C and 600 Vac, at a conductor size that falls within Style 3135’s 26 AWG–12 AWG range. That combination identifies the material and rating boundary — it does not, on its own, tell you the conductor material, the current the circuit will carry, or how the wire will be terminated. Those decisions come from your equipment design and are confirmed when you place the order, not from the AWG or Style number alone. 16 AWG here is simply the featured conductor size for this page; it is not described as a “higher-current” or “heavy-current” designation, since UL Style 3135 does not establish current-carrying capacity by AWG.
The Construction You Are Actually Specifying
UL Style 3135 defines a single conductor with extruded insulation, permitted solid or stranded — this page does not present the 16 AWG configuration as stranded-only, and buyers requiring a specific conductor form should state it explicitly. The insulation is extruded silicone rubber (SR), applied at a minimum average thickness of 30 mils and a minimum thickness of 27 mils at any point across the Style’s full conductor range. These are the two dimensions that actually define the insulation system for this Style; we do not use invented adjectives such as “premium silicone” or “advanced formula” to describe it. Conductor material and plating are a separate decision — the Style table does not establish bare copper, tinned copper, or any other finish as universal, so this should be specified when you request a quotation.
The Installation Condition That Cannot Be Ignored
UL Style 3135’s use is stated precisely as internal wiring of appliances where totally enclosed. This qualifier is not a footnote — it defines the boundary of where this construction applies. “Totally enclosed” means the wire is installed within an appliance construction that fully encloses the internal wiring, not in an open or exposed installation. The 200°C rating can be relevant where an appliance design specifies a high-temperature internal wiring construction, but the installation must still satisfy this totally-enclosed boundary — this page does not claim suitability for direct exposure to heater elements, burner flame, combustion areas, or radiant heating elements, and does not describe the wire itself as a heating element, resistance wire, or heating cable. It is component wiring carrying an electrical connection, installed within an enclosed appliance construction.
Using 16 AWG as an Internal Appliance Power Lead
“Power lead” is the commercial procurement term CableApex uses for this application context — it is not the UL Style’s own classification. Where a design specifies UL 3135 16 AWG for an appliance internal power connection, appropriate examples include component-to-terminal power leads and internal connections within power modules or transformer/coil assemblies, presented only as possible contexts where the appliance or end-product design specifies Style 3135 and the totally enclosed condition is satisfied — not as separately UL-approved application categories. Confirming whether 16 AWG is the size your BOM or circuit design actually requires is a decision made against your equipment’s electrical requirements, not against a claim this page makes about the wire’s current capacity.
What the UL Style Does Not Define
It’s worth being explicit about what UL Style 3135 does not establish, because these are exactly the details that get assumed incorrectly on generic product pages. The Style does not define: a universal conductor material or plating (bare, tinned, or otherwise); a specific strand count or strand diameter; a finished outside diameter; conductor resistance; ampacity or current-carrying capacity; a bending radius or flex-cycle rating; a standard insulation colour; or a specific terminal or crimp system. Every one of these is either an order-specific choice you make when requesting a quotation, or a value that depends on the actual conductor and assembly used — not a property of the Style number itself.
Dimensional Questions Before the Wire Reaches the Assembly Line
Before this wire reaches your production line, a few things are worth confirming rather than assuming. Finished OD and routing clearance depend on the actual conductor construction and are not calculated from AWG and insulation thickness alone — if your enclosure has a tight routing allowance, provide your maximum permitted OD with your enquiry. Stripping and termination performance depend on your tooling, terminal design, and the confirmed conductor construction; this page does not promise a specific stripping or crimp result, and processing details should be confirmed against your equipment before production. Insulation colour and any identification requirement should be specified per order. Packaging — spool, reel, or cut-to-length — is likewise an order variable rather than a fixed default.
UL 3135 16 AWG Specification Reference
| Parameter | UL Style 3135 |
|---|---|
| UL Subject / Section | 758, Section 3 |
| Construction | Single conductor with extruded insulation |
| Featured Conductor Size | 16 AWG |
| UL Style Conductor Range | 26 AWG – 12 AWG |
| Conductor Form | Solid or stranded |
| Rated Temperature (Maximum) | 200°C |
| Voltage Rating | 600 Vac |
| Flame Rating | Horizontal flame |
| Insulation | Extruded silicone rubber (SR), 30 mil min. average / 27 mil min. at any point |
| Marking | General |
| Use | Internal wiring of appliances where totally enclosed |
| RoHS / REACH | Confirmed during quotation according to ordered materials and documentation requirements |
Building a Complete 16 AWG RFQ
An RFQ for this construction breaks naturally into three groups of decisions:
Electrical / UL requirement: UL Style 3135, 16 AWG, required temperature, required voltage, confirmation of a totally enclosed internal appliance application.
Conductor / dimensional requirement: solid or stranded, conductor material or plating, finished OD limit, insulation colour, termination details if relevant.
Commercial requirement: order quantity, packaging, marking requirement, UL documentation requirement, shipping destination.
Send this information and we respond with a quotation within 12 business hours. Production lead time depends on the confirmed construction and order quantity, and shipping options and applicable Incoterms are confirmed during quotation according to destination.
Marking, Documentation and Order Confirmation
Qualifying UL AWM Style 3135 constructions can be supplied through the relevant qualified manufacturing scope for this Style. UL marking and documentation are confirmed according to the qualified Style 3135 construction supplied for the order and are not identical across every commercial variation. RoHS and REACH are separate regulatory frameworks from UL recognition; applicable RoHS / REACH documentation requirements can be confirmed according to the ordered construction.
Browse our UL 3135 Silicone Wire category, or see our broader Silicone Rubber Wire range for related constructions.
