UL AWM Style 3666 — 105°C XLPE Wire Supply for Vietnam and Indonesia
UL AWM Style 3666 is a 105°C maximum, 600 Vac extruded XLPE wire covering 32 AWG through 1000 kcmil in solid or stranded round construction, with tinned or bare copper conductor available. The Style is designated for internal wiring where not subjected to mechanical abuse. This page covers factory-direct supply of UL AWM Style 3666 for equipment OEMs and industrial equipment buyers in Vietnam and Indonesia, with CIF Ho Chi Minh City and CIF Surabaya export available from the Yangzhou production facility. UL AWM Style 3666 documentation can be provided according to the confirmed ordered construction.
The 15 Mil Thin Wall at 32–10 AWG — UL 3666’s Distinguishing Characteristic
The most technically notable feature of UL AWM Style 3666 is the insulation wall specification in the fine-to-mid conductor range. Across 32 AWG through 10 AWG, the Style file specifies a minimum average wall of just 15 mils (0.38 mm) — the same thin-wall class used by 300 Vac Styles such as UL AWM 1007 and UL AWM 1569 — while carrying a 600 Vac rating. This makes UL 3666 the thinnest-wall 600 Vac XLPE AWM construction available in the 32–10 AWG range within this production scope, and the practical consequence is a smaller finished outer diameter at 600 Vac than comparable 600V AWM Styles at the same conductor size.
For comparison at the same conductor class: UL AWM 1015 PVC specifies 30 mils minimum average for 30–9 AWG, and UL AWM 3271 XLPE specifies 30 mils for 30–9 AWG — both double the UL 3666 wall in this range. Where an equipment design at 600 Vac has constrained routing channel space in the enclosed assembly and the design accepts a UL AWM construction rated for internal wiring not subjected to mechanical abuse, UL 3666 offers a meaningfully smaller finished OD.
Above 10 AWG the wall specification steps up sharply. At 8 AWG the minimum average wall becomes 45 mils — three times the 15 mil wall of the adjacent thinner range — and increases progressively across the larger conductor groups. Buyers ordering across both sides of this boundary should expect a substantial OD difference between a 10 AWG and an 8 AWG construction.
Product Specifications — UL AWM Style 3666
| Parameter | Value per UL Style 3666 File |
|---|---|
| UL AWM Style | 3666 |
| UL Subject / Section | 758, Section 3 |
| Temperature Rating | 105°C maximum |
| Voltage Rating | 600 Vac |
| Conductor Range | 32 AWG – 1000 kcmil, solid or stranded round |
| Conductor Material | Tinned or bare copper — confirm at order |
| Insulation Material | Extruded XLPE (cross-linked polyethylene) |
| 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 where not subjected to mechanical abuse |
| Marking | Confirmed according to qualified construction, order requirement, and applicable UL marking rules |
| Colour Options | Red, black, white, yellow, blue, green, brown, grey; custom on request |
| RoHS / REACH | Documentation available on request, where applicable |
Insulation Wall Thickness by Conductor Size Group
| Conductor Size Group | Min Average Thickness | Min at Any Point |
|---|---|---|
| 32–10 AWG | 15 mils (0.38 mm) | 13 mils (0.33 mm) |
| 8 AWG | 45 mils (1.14 mm) | 40 mils (1.02 mm) |
| 7–2 AWG | 60 mils (1.52 mm) | 54 mils (1.37 mm) |
| 1–4/0 AWG | 80 mils (2.03 mm) | 72 mils (1.83 mm) |
| 250–500 kcmil | 95 mils (2.41 mm) | 86 mils (2.18 mm) |
| 501–1000 kcmil | 110 mils (2.79 mm) | 92 mils (2.34 mm) |
UL 3666 XLPE vs UL 1015 PVC — Same Rating, Different Insulation System
UL AWM Style 3666 and UL AWM Style 1015 share the same 105°C / 600 Vac positioning but use different insulation systems. The table below summarises the comparison for buyers selecting between the two.
| Property | UL 3666 (this page) | UL 1015 |
|---|---|---|
| Temperature | 105°C max | 80 / 90 / 105°C max |
| Voltage | 600 Vac | 600 Vac / 750 Vdc |
| Insulation system | Extruded XLPE — cross-linked thermoset | Extruded PVC — thermoplastic |
| Wall at fine-to-mid AWG | 15 mils min avg (32–10 AWG) | 30 mils min avg (30–9 AWG) |
| Conductor range | 32 AWG – 1000 kcmil | 30 AWG – 2000 kcmil |
| Conductor material | Tinned or bare copper (Style file states both) | Solid or stranded copper, bare or tinned by order |
| Consider when | The design specifies XLPE insulation, or a thinner 600V wall is needed at 32–10 AWG | The design accepts PVC, or 750 Vdc / larger kcmil sizes are required |
XLPE is a cross-linked thermoset system and PVC is a thermoplastic system. Where an equipment design specification designates XLPE insulation for the internal wiring, or where improved dimensional stability under contact pressure at rated operating temperature is part of the design requirement, UL 3666 is the XLPE option at 105°C / 600 Vac. Where the design accepts PVC insulation, requires the 750 Vdc rating, or requires conductor sizes above 1000 kcmil, UL 1015 covers those requirements. Neither Style is universally preferable — the selection follows the equipment design specification and the confirmed installation conditions.
Applications — Protected Internal Wiring in Vietnam and Indonesia
UL AWM Style 3666 is designated for internal wiring where not subjected to mechanical abuse. This use restriction means the wire routing must be protected from physical impact and abrasion by the equipment structure — UL 3666 is not appropriate for exposed routing locations where mechanical damage is a risk. Application contexts where UL AWM Style 3666 is commonly evaluated by Vietnamese and Indonesian equipment manufacturers include:
- Protected internal equipment wiring inside enclosed assemblies where the design specification designates XLPE insulation for the 105°C / 600 Vac internal wiring, and mechanical protection is provided by the equipment structure at all routing points
- Selected 8 AWG UL 3666 constructions for protected internal routing where the 45 mils minimum average insulation wall and 600 Vac rating are specified at that conductor cross-section, and the routing location is protected from mechanical abuse within the enclosure
- Compact internal wiring in the 32–10 AWG range where the 15 mils minimum average wall provides a smaller finished outer diameter at 600 Vac than thicker-wall AWM alternatives, in enclosed assemblies with constrained routing channel space
- Internal wiring where tinned copper conductor is specified by the equipment design, using the tinned copper conductor option available within the UL Style 3666 scope
- OEM export equipment assemblies where the customer’s design specification designates XLPE insulation material for the internal wiring and UL AWM Style documentation is required for the equipment-level evaluation
UL AWM Style 3666 is not designated for field wiring, building installation wiring, external cabling, power distribution, or any routing location where the wire may be subject to mechanical abuse. Current-carrying capacity and thermal derating must be confirmed at the equipment design level.
Conductor Material — Tinned or Bare Copper
The UL Style 3666 file explicitly provides for both tinned and bare copper conductor. This is a construction option confirmed at the order stage rather than a fixed default. Tinned copper conductor supports soldering processes and offers surface characteristics that some equipment designs specify for the termination method or the routing environment inside the enclosure. Bare copper is suitable for most crimp and screw terminal connections. Vietnamese and Indonesian equipment manufacturers should specify the required conductor finish during the quotation stage, as it affects both the production setup and the per-metre cost position.
Factory Supply for Vietnam and Indonesia
- Direct factory export: UL AWM Style 3666 XLPE wire is produced at the Yangzhou facility and supplied factory-direct to Vietnam and Indonesia. CIF Ho Chi Minh City and CIF Surabaya options can be quoted — transit approximately 10–14 days. Lead time depends on AWG or kcmil size, conductor material, colour, and quantity, and is confirmed at the quotation stage.
- Conductor range and options: Full 32 AWG–1000 kcmil range covered by the Style. Solid or stranded round construction, tinned or bare copper. Confirm conductor size, stranding, and material at the enquiry stage. Mixed AWG orders accepted.
- MOQ and ordering: Minimum order quantity typically starts from 100m per AWG per colour, subject to conductor size and construction. Specify AWG or kcmil size, conductor type, conductor material, insulation colour, reel format, quantity, and destination port at the enquiry stage.
- Flame test capability: Horizontal flame is the UL Style 3666 file requirement. VW-1 vertical flame testing is available according to the confirmed construction and order requirement.
- Documentation: UL AWM Style 3666 documentation available for confirmed constructions on request. RoHS and REACH documentation available on request where applicable. Commercial Invoice, Packing List, Certificate of Origin (CCPIT), Bill of Lading provided as standard. HS Code: 8544.49. B2B quotation response within 12 hours.
Related UL AWM Styles
Buyers evaluating UL AWM Style 3666 for Vietnam and Indonesia supply may also consider: UL AWM 1015 (80–105°C / 600 Vac or 750 Vdc, extruded PVC, 30 AWG–2000 kcmil — PVC alternative at the same temperature and voltage class, with 750 Vdc rating and a wider conductor range); UL AWM 3271 (125°C / 600 Vac or 750 Vdc, extruded XLPE with optional semi-conductive layer, 30 AWG–2000 kcmil — higher-temperature XLPE alternative with motor lead scope); and UL AWM 3321 (150°C / 600 Vac or 750 Vdc, extruded XLPE with optional braid, 30 AWG–4/0 AWG — highest-temperature XLPE option for appliance internal wiring within this production scope).
