UL AWM Style 10362 / 20 AWG — PFA Hook-Up Wire for Compact Protected Internal Wiring
This page covers the 20 AWG construction of UL AWM Style 10362, extruded PFA fluoroplastic insulation rated at 250°C maximum and 600 Vac, for compact protected internal wiring inside enclosed electrical and electronic equipment. A general UL 10362 Style overview covering the full 30 AWG–4/0 AWG range is available on the UL AWM 10362 PFA Wire product page. This page is for buyers specifying 20 AWG PFA wire for internal lead wiring applications where conductor size, insulation wall geometry, and 250°C rating are the primary specification criteria. CableApex supplies UL AWM Style 10362 20 AWG from factory production. UL AWM Style 10362 documentation is available for confirmed constructions on request.
Why the 10 Mil Insulation Wall at 20 AWG Matters for Compact Internal Routing
At 20 AWG, UL AWM Style 10362 falls within the 30–10 AWG insulation thickness group, where the Style file specifies a minimum average wall of just 10 mils (0.25 mm), with 8 mils (0.20 mm) minimum at any point. This is the thinnest insulation class in the UL 10362 Style range, and it is significantly thinner than PTFE constructions at equivalent AWG — where UL AWM Style 1659 specifies 20 mils minimum average for the same conductor class. The practical result is that a 20 AWG UL 10362 PFA construction delivers a 250°C maximum temperature rating with a notably compact finished outer diameter compared to fluoroplastic alternatives at the same AWG. For OEM assemblies where conductor channel space is constrained and 250°C-rated PFA insulation is specified, the 10 mil wall at 20 AWG is a key selection advantage.

UL AWM Style 10362 — Key Specifications
| Parameter | Value per UL Style 10362 File |
|---|---|
| UL AWM Style | 10362 |
| UL Subject / Section | 758, Section 1 |
| Temperature Rating | 250°C maximum |
| Voltage Rating | 600 Vac |
| AWG (this page) | 20 AWG |
| Full Style AWG Range | 30 AWG – 4/0 AWG, solid or stranded |
| Insulation Material | Extruded PFA (Perfluoroalkoxy) |
| Wall Thickness at 20 AWG (30–10 AWG group) | 10 mils (0.25 mm) min avg / 8 mils (0.20 mm) min at any point |
| Conductor | Stranded copper; bare or tinned (confirm at order) |
| Flame Rating | Horizontal flame; VW-1 vertical flame test available |
| UL Recognition | UL Recognized Component — file on record |
| Permitted Use (per UL Style file) | Internal wiring |
| Colour Options | Red, black, white, yellow, blue, natural; custom on request |
| RoHS / REACH | Documentation available on request, where applicable |
20 AWG PFA — Typical Factory Construction Data
The values below represent a typical factory-supplied stranded copper construction for UL AWM Style 10362 at 20 AWG. These are factory construction values, not universal UL Style requirements. Final conductor stranding, conductor finish, insulation thickness, outer diameter, colour, marking, spool length, packaging, and documentation depend on the confirmed order specification.
| Parameter | Typical Factory Value |
|---|---|
| Conductor | 20 AWG stranded copper — 21/0.18 mm (typical; confirm at order) |
| Conductor Finish | Bare or tinned copper (confirm at order) |
| Insulation Thickness (typical) | ~0.25 mm (10 mils) — minimum average per UL Style file |
| Approx. Outer Diameter | ~1.80 mm (confirm against ordered construction) |
| Max Conductor Resistance at 20°C | ~36.7 Ω/km (typical production value) |
Applications — Compact Protected Internal Wiring at 250°C
UL AWM Style 10362 at 20 AWG is typically evaluated for protected internal wiring inside enclosed equipment assemblies where a fine-gauge 250°C-rated PFA fluoroplastic construction is required. At 20 AWG, the compact finished outer diameter makes this construction well suited to applications where conductor routing channels are constrained and the insulation wall must remain thin while delivering the 250°C temperature class. Application categories include:
- Protected internal power leads inside compact enclosed OEM equipment assemblies where 20 AWG conductor cross-section and 250°C maximum PFA rating are specified
- Compact internal interconnect wiring inside enclosed equipment where multiple fine-gauge leads must be routed through limited channel space and 250°C PFA insulation is required
- Internal lead wire connections inside enclosed analytical, instrumentation, or semiconductor equipment where 20 AWG PFA AWM wire is evaluated and accepted at the equipment level
- OEM repeat production internal wiring where a fixed 20 AWG stranded PFA specification is confirmed and re-ordered at the same construction across production runs
UL AWM Style 10362 is designated for internal wiring. It is not designated for field wiring, building installation wiring, external cabling, direct heating element contact, or any use outside protected internal equipment wiring.
Selecting Between 20 AWG Fluoroplastic Styles
At 20 AWG, three fluoroplastic AWM Styles are available at different temperature and wall thickness combinations. UL AWM Style 10362 PFA at 10 mils minimum average wall is the thinnest-wall fluoroplastic option at this AWG size and delivers the 250°C maximum rating. Where 200°C maximum is sufficient for the equipment thermal design, UL AWM Style 1332 FEP (200°C / 300 Vac, 30–10 AWG, 13 mils minimum average wall) provides a lower-temperature fluoroplastic alternative — noting that UL 1332 carries a 300 Vac rating compared to UL 10362’s 600 Vac, and a slightly thicker minimum wall. Where flexibility is the primary requirement and fluoroplastic insulation is not specified, UL AWM Style 3135 silicone wire (200°C / 600 Vac, 26–12 AWG) provides a softer, more flexible alternative at a lower temperature class than UL 10362 PFA.
Factory Supply — UL AWM Style 10362 / 20 AWG
- Direct factory production: UL AWM Style 10362 20 AWG PFA wire is produced at the Yangzhou facility and supplied through CableApex for B2B export orders. PFA extrusion at fine-gauge AWG sizes is available from standard production.
- Conductor finish options: Bare stranded copper or tinned stranded copper available by confirmed order specification. Confirm conductor finish at enquiry stage based on termination method and assembly requirements.
- Custom colour and spool length: PFA jacket colour and spool length produced to buyer specification. Standard colours: red, black, white, yellow, blue, natural translucent. Custom colours on request. MOQ 100m per colour.
- Cut-to-length packaging: Fixed-length cutting available on request. Confirm format requirements at the enquiry stage.
- Flame test capability: Horizontal flame is the UL Style 10362 file requirement. VW-1 vertical flame testing is available according to the confirmed construction and order requirement.
- Export documentation: Commercial Invoice, Packing List, Certificate of Origin (CCPIT), Bill of Lading provided as standard. UL AWM Style 10362 documentation available for confirmed construction on request. RoHS and REACH documentation available on request where applicable. HS Code: 8544.49. B2B quotation response within 12 hours.
Related UL AWM Styles
Buyers evaluating UL AWM Style 10362 20 AWG may also consider: UL AWM 10362 PFA Wire (general Style page covering 30 AWG–4/0 AWG for multi-AWG PFA procurement enquiries); UL AWM 1332 FEP Wire (200°C / 300 Vac, 30–10 AWG, 13 mils min avg wall — lower-temperature FEP alternative for 200°C internal wiring at 300 Vac); UL AWM 3135 Silicone Wire (200°C / 600 Vac, extruded SR, 26–12 AWG — silicone rubber alternative where flexibility is prioritised over fluoroplastic insulation properties); UL AWM 1007 PVC Wire (80°C / 300 Vac, 32–16 AWG — lower-temperature lower-voltage PVC hook-up wire for standard internal wiring where 250°C PFA is not required); and Mica & Fiberglass High Temperature Wire for internal wiring requirements above the 250°C ceiling of UL 10362.






