Multi-core Cable
Multi-Core Cable for High-Temperature Internal Wiring
CableApex’s Multi-core Cable category covers multiple-conductor cable constructions for internal equipment wiring, where several insulated conductors need to be routed as one cable or assembly rather than as separate individual wires. This category now spans several technically distinct construction families — UL AWM mica / glass-braid multi-conductor Styles, multi-core silicone rubber cable assemblies, and multi-core PFA high-temperature cable assemblies. These families do not share the same UL Style, insulation material, temperature rating, voltage rating, AWG range, outer construction, or UL recognition status. The sections below help you identify the construction that matches your application, with full technical detail on each dedicated product page.
UL Multi-Conductor Mica Glass Braid Cable
The strongest UL-covered multiple-conductor family in this category is built on mica-tape and treated-glass-braid AWM Styles that explicitly permit two or more qualifying conductors to be cabled together. This includes dedicated products such as UL 5107, UL 5128, UL 5335, UL 5360, and UL 5476 multi-core mica glass braid cable. These Styles are not interchangeable specifications: they differ in temperature rating (200°C or 450°C depending on Style), voltage rating (300 Vac or 600 Vac depending on Style), conductor size range, mica and glass-braid thickness requirements, and available assembly options such as binder, fiberglass fillers, overall treated glass braid, or optional metallic shield. For applicable UL multiple-conductor mica Styles, 1.500 inches is the maximum permitted assembly outside diameter defined by the relevant UL construction — it is not a universal finished cable diameter, and not every mica Style or every ordered construction reaches that dimension. Visit each Style’s product page for its exact conductor range, insulation thickness table, and assembly options.
Multi-Core Silicone Rubber Cable with UL 3135 Core Options
This construction is commercially a multi-conductor silicone cable assembly, built from multiple individually insulated silicone conductors. Where specified, the individual conductors can be supplied as qualifying UL 3135 Silicone Wire core options — rated 200°C, 600 Vac, 26–12 AWG, solid or stranded, with extruded silicone rubber insulation. UL AWM Style 3135 is a single-conductor Style: UL recognition belongs to the qualifying individual core wire, and the completed multi-core assembly is not automatically described as UL 3135-recognized unless a separate assembly-level construction confirms it. See our Silicone Rubber Wire range for related single-conductor options.
Multi-Core PFA Cable with UL 10362 Core Options
This construction is a high-temperature multi-conductor cable assembly built from individually insulated PFA conductors. Where specified, the individual conductors can be supplied as qualifying UL 10362 PFA Wire core options — rated 250°C, 600 Vac, 30 AWG–4/0 AWG, solid or stranded, with extruded PFA insulation, for internal wiring. Like UL 3135, UL AWM Style 10362 is a single-conductor Style: UL recognition applies to the qualifying individual core wire, not automatically to the completed multi-core assembly. See our Fluoropolymer Wire range for related single-conductor options.
Understanding UL Recognition in Multi-Core Cable
Two different UL paths apply within this category. The mica specialty family contains UL Styles that explicitly permit two or more conductors to be cabled together as part of the Style itself — UL recognition can extend to the qualifying multi-conductor assembly construction. By contrast, UL 3135 silicone and UL 10362 PFA are single-conductor Styles: their UL recognition belongs to the individual core wire, and a multi-core cable built from those cores is a custom assembly whose own rating, marking, and documentation depend on the final ordered construction. Confirming which path applies to your selected product helps determine what UL marking and documentation can be provided with your order.
Choosing a Multi-Core Cable Construction
Mica / Glass Braid — for UL multiple-conductor specialty constructions where high-temperature protected internal wiring is required. Exact temperature, voltage, conductor range, and assembly details depend on the selected UL Style.
Silicone Rubber — for multi-conductor assemblies requiring silicone-insulated core wires, with qualifying UL 3135 single-conductor core options where applicable.
PFA — for high-temperature multi-conductor assemblies requiring PFA-insulated cores, with qualifying UL 10362 single-conductor core options where applicable.
Products in this category are intended for protected internal equipment wiring, high-temperature internal wiring, and multiple-conductor internal connections, within the application boundary supported by the selected core Style or construction. They are not positioned for building wire, field wiring, branch circuit cable, tray cable, outdoor or direct-burial cable, or general industrial control cable.
What to Specify for a Multi-Core Cable Quote
To receive an accurate quotation, please specify:
- Number of conductors / cores
- Required AWG or conductor size
- Conductor material and finish
- Required insulation material
- Required UL Style or UL core option
- Operating temperature requirement
- Voltage requirement
- Required overall construction (jacket, binder, filler, braid)
- Shield requirement, where applicable
- Core identification / colours
- Required finished OD, if the project has a dimensional limit
- Quantity
- Packaging requirement
- UL marking requirement
- Documentation requirement
- Application / equipment description
- Shipping destination
Provide the required cable construction and commercial quantity for technical review and quotation.
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