UL 3135 12 AWG Silicone Wire for Totally Enclosed Appliance Power-Supply Leads
UL AWM Style 3135 12 AWG silicone rubber wire, rated 200°C and 600 Vac, is a specific conductor-size configuration within Style 3135’s broader 26 AWG–12 AWG range, used for protected internal lead wiring inside totally enclosed appliance power-supply or power-section assemblies. This page focuses on the 12 AWG SKU — its confirmed silicone insulation requirement and application boundary — as a defined internal-wiring component. UL Style 3135’s confirmed Use is internal wiring of appliances where totally enclosed; this page does not treat UL 3135 as a universal industrial power-supply wire.
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The Confirmed UL 3135 12 AWG Construction
| Parameter | UL 3135 |
|---|---|
| UL AWM Style | 3135 |
| Description | Single conductor with extruded insulation |
| Featured Conductor Size | 12 AWG |
| Style Conductor Range | 26 AWG – 12 AWG, solid or stranded |
| Temperature Rating | 200°C |
| Voltage Rating | 600 Vac |
| Flame | Horizontal flame |
| Insulation | Extruded SR (silicone rubber), 30 mils min. average / 27 mils min. at any point |
| UL-Defined Use | Internal wiring of appliances where totally enclosed |
30/27 Mil Silicone Insulation at 12 AWG
The confirmed insulation requirement for UL 3135 is extruded silicone rubber at 30 mils minimum average thickness and 27 mils minimum thickness at any point, applying across the Style’s full 26–12 AWG range — this figure is not tiered by conductor size group, so this page does not invent a separate value specific to 12 AWG. This page does not convert this figure into an invented finished outside diameter; conductor geometry, including finished OD, is order-specific.
12 AWG Sits at the Upper Boundary of the UL 3135 Range
UL Style 3135 covers 26 AWG through 12 AWG, and 12 AWG is the largest conductor size the Style permits. This page represents that specific 12 AWG configuration, distinct from CableApex’s separate UL 3135 16 AWG appliance power-lead product. If your project requires 16 AWG or another size within the Style’s range, that is a separate SKU — confirm the actual required AWG against your BOM or electrical design before ordering.
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“Totally Enclosed” Is a Required Installation Condition
This qualifier is central to how UL 3135 must be applied and is preserved throughout this page rather than shortened to generic “internal wiring.” The confirmed UL Use states internal wiring of appliances where totally enclosed — meaning the wire is installed within an appliance construction that fully encloses the internal wiring. This page does not describe UL 3135 as suitable for external power-supply field wiring, open-frame industrial power-supply installation, or exposed power-section leads outside the appliance enclosure.
UL 3135’s Rating vs Your Power-Supply Electrical Design
UL Style 3135 establishes the wire’s own temperature and voltage rating — it does not evaluate, size, or certify the power-supply circuit the wire is used in. This page does not make claims about power-supply output rating, switching frequency, ripple current, or thermal performance of the power module itself. Selecting a wire construction is a separate step from your power-supply electrical design; the wire’s 200°C / 600 Vac rating should be confirmed as adequate for the actual internal temperature and voltage conditions of your specific power-supply layout, not assumed from the Style number alone.
12 AWG Does Not Establish Current-Carrying Capacity
This page does not publish a generic ampacity figure simply because the product is 12 AWG, and does not infer allowable current from the 12 AWG conductor size or the 600 Vac voltage rating — these are separate parameters. Current-carrying suitability depends on the actual conductor construction, power-supply circuit design, ambient conditions, and installation, and must be evaluated accordingly rather than assumed from AWG alone.
Conductor Form, Material, Termination and Connectors: RFQ Fields
UL Style 3135 permits solid or stranded conductor construction at 12 AWG; conductor material and plating are not established by the Style data. This page does not describe UL 3135 12 AWG as a fixed bare-copper or tinned-copper product — if your BOM or drawing specifies a conductor material, plating, terminal, connector, or termination process for the power-supply lead, include that in your RFQ so the corresponding construction can be confirmed.
Common RFQ Gaps for UL 3135 12 AWG Power-Supply Leads
Certain specification fields are frequently left out of an initial enquiry and typically require a follow-up before an accurate quotation can be issued. These are common information gaps, not observations about any particular buyer: UL 3135 and 12 AWG are specified but conductor form is missing; conductor plating is required by the termination process but not stated; a finished OD limit is omitted; terminal or connector information is missing; colour is omitted; quantity is stated without a packaging format; or flexibility is requested without a measurable requirement. These gaps lead to quotation revisions and mismatched supplier constructions.
What UL 3135 Does Not Automatically Define
The Style data does not automatically define: conductor material, conductor plating, strand count, strand diameter, conductor resistance, ampacity, current rating, power-supply output rating, finished OD, bend radius, flex cycles, flexibility class, terminal compatibility, connector compatibility, standard colour, cut-length tolerance, reel length, MOQ, stock status, lead time, or production capacity. These remain RFQ, BOM, or ordered-construction details where relevant — none of them are invented on this page.
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RFQ Checklist for UL 3135 12 AWG Silicone Wire
To request an accurate quotation, please provide:
- UL AWM Style 3135
- 12 AWG
- Solid or stranded
- Conductor material, if controlled
- Conductor plating, if controlled
- 200°C requirement
- 600 Vac requirement
- Confirmation of totally enclosed appliance location
- Insulation colour
- Nominal or maximum finished OD, if controlled
- Terminal / contact type
- Connector information
- Termination process
- Cut length, if applicable
- Quantity
- Reel or packaging requirement
- Destination
- Documentation requirements
Applicable RoHS / REACH documentation can be confirmed according to the ordered construction.
See the UL 3135 Silicone Wire category, our Silicone Rubber Wire range, or our AWM Wire category for other conductor sizes within this Style.



