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High Temperature Cables

UL 3123 Silicone Hook-Up Wire, 150°C 600V

UL 3123 is a UL-certified silicone hook-up wire rated 150°C and 600 V AC for internal wiring. Its stranded copper conductor and silicone insulation provide a defined construction for appliance leads that specify this temperature and voltage combination.

  • Voltage: 600 V AC
  • Temperature: 150°C
  • Insulation / covering: extruded silicone rubber
  • Size selection: 30–16 AWG
  • Certification: UL-certified AWM; UL 758
Product information
Product overview

UL 3123 wire selection

UL 3123 is a UL-certified silicone hook-up wire rated 150°C and 600 V AC for internal wiring. Its stranded copper conductor and silicone insulation provide a defined construction for appliance leads that specify this temperature and voltage combination.

The complete dimension table covers eight sizes from 30 AWG to 16 AWG. The nominal silicone wall remains 0.82 mm throughout that range, while the finished diameter increases from 1.95 mm to 3.14 mm. This makes it possible to compare conductor sizes without losing sight of the space needed around the insulated lead. Stranding is listed for each row to support terminal and stripping-tool selection.

Allow a bend radius of 10 times the finished diameter for the listed construction and check the route at the equipment entry. For a replacement lead, confirm that 150°C is the required grade rather than assuming every silicone wire has a 200°C rating. Installation flexibility should also be distinguished from repeated movement in service; moving machinery requires its own cable-duty assessment.

See the Specifications tab for the model and size tables. Browse the high-temperature cable range for related constructions. Use the silicone hook-up wire family for the wider temperature and voltage comparison.

Construction

Construction

UL 3123 uses the following conductor and insulation system. The diagram illustrates the layer sequence; select the conductor construction and covering shown in the required size specification.

Illustrative UL 3123 single-core conductor and insulation construction cutaway
Illustrative UL 3123 construction; layer dimensions are not to scale.
UL 3123 construction layers
ComponentConstruction detail
ConductorStranded copper
InsulationExtruded silicone rubber
ConstructionSingle insulated conductor
Applications

Applications

UL 3123 is intended for internal appliance and equipment connections requiring 150°C, 600 V silicone insulation. Keep the lead supported and provide bend space at terminal blocks and enclosure entries.

Illustrative UL 3123 insulated lead routed inside industrial equipment
Illustrative UL 3123 equipment application; shown as an installation concept.

UL 3123 replacement selection

For replacement enquiries, include the existing wire marking and the equipment connection drawing so the conductor, insulation and terminal arrangement can be matched.

Specifications

Specifications

UL 3123 technical data
ParameterSpecification
UL styleUL 3123
Voltage rating600 V AC
Temperature rating150°C
Insulation / coveringextruded silicone rubber
Conductor size coverage30–16 AWG
Nominal silicone wall0.82 mm
Minimum average / point wall30 / 27 mils
Bending radius for listed construction10 × finished OD
UL 3123 size and dimension table
Model and conductor sizeStranding (No./mm)Nominal silicone wall (mm)Nominal OD / tolerance (mm)
UL 3123 16 AWG26/0.2540.823.14 ± 0.10
UL 3123 18 AWG34/0.180.822.86 ± 0.10
UL 3123 20 AWG21/0.180.822.60 ± 0.10
UL 3123 22 AWG17/0.160.822.41 ± 0.10
UL 3123 24 AWG11/0.160.822.26 ± 0.10
UL 3123 26 AWG7/0.160.822.13 ± 0.10
UL 3123 28 AWG7/0.1270.822.03 ± 0.10
UL 3123 30 AWG7/0.100.821.95 ± 0.10

Selecting the specified construction

Specify UL 3123 with the AWG, strand construction and finished diameter from the table. Use the listed 10 × OD bend radius when checking the selected route.

Standards

Standards

TEBAOFLEX UL 3123 wire is UL-certified appliance wiring material.

UL 3123 certification and standards
ItemRequirement or reference
CertificationUL-certified AWM
Style designationUL 3123
Construction standardUL 758 — Appliance Wiring Material
Style flame classificationHorizontal flame

Identify the UL style, conductor size, voltage and temperature grade on the purchasing specification. Include the required product identification and certification documents with the enquiry.

Engineering-led quotation

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