20 Gauge 4 Conductor 20/4 Flexible Electrical Double Shielded Wire UL2464 20 Gauge 4 Core Shielded Cable

20 AWG 4 Conductor Double Shielded Wire Overview

Zhong Hua Jiang 20 Gauge 4 Conductor Electrical Double Shielded Wire is a flexible 20/4 cable designed for low-voltage signal, control, instrumentation, electronic equipment and CNC auxiliary wiring where four conductors and electromagnetic interference resistance are required. It uses four twisted tinned-stranded-copper conductors, PVC insulation, aluminum shielding and a tinned-copper shielding layer inside a durable PVC jacket.

With a listed 300V voltage rating, 80°C temperature rating, 36.7 Ω/km conductor resistance at 20°C and 2000V AC/min dielectric test, this 20 AWG 4-core double shielded wire is suitable for CNC signal wiring, controller I/O wiring, stepper/servo auxiliary circuits, VFD-related low-voltage control, electronic instruments, transformers, power-limited control systems, audio/control wiring, intercom/security systems, lighting control and other applications that require four insulated conductors plus EMI shielding.

Electrical Shielded Wire for Sale

This 20 AWG 4 conductor double shielded wire is built for users who need a compact four-core cable for low-voltage control, signal transmission, panel wiring and electronic equipment connections. The black, red, yellow and white conductor colors help simplify line identification, signal assignment, polarity marking and maintenance checks during installation.

Compared with unshielded four-conductor wire, the aluminum and tinned-copper double shielding structure helps reduce noise coupling from motors, VFDs, switching power supplies, relays and nearby electrical devices. The tinned stranded copper conductors support conductivity, solderability, oxidation resistance and flexible handling during assembly.

Zhong Hua Jiang can supply this flexible electrical double shielded wire for machine builders, maintenance teams, OEM equipment assembly, control-panel wiring and wholesale projects. Standard order discussions can include cable length, conductor assignment, shielding termination, application, quantity, packaging and destination-market requirements.

Request 20/4 Shielded Wire Pricing

Specification of Double Shielded Wire

20 Gauge 4 Conductor Wire

For accurate selection, confirm the required cable length, working voltage, signal type, conductor assignment, bend requirement, shielding termination and equipment electrical specifications before ordering. For power circuits, verify current, voltage drop, installation temperature, cable bundling and applicable electrical standards before use.

Advantage of Double Shielded Wire

Why Choose Our Wire

High Conductivity

20 AWG tinned stranded copper offers a compact balance between flexibility, conductor capacity and signal performance. It is suitable for many low-voltage control, communication, instrumentation and electronic equipment circuits where a thinner cable than 18 AWG or 14 AWG is preferred.

Advantage of Tinned Copper
Comparison Item	Tinned Copper	Pure Copper	CCA Copper-Clad Aluminum
Easy to Solder
Better Conductivity
Anti-Oxidation
Anti-Corrosion
Sturdy and Durable

Tinned copper offers excellent conductivity, prolongs service life and is more suitable for soldering.

Double Shielded Layer

The double shielded structure uses aluminum and tinned copper shielding to help achieve a stronger shielding effect than a basic unshielded cable. The shielding layer can help contain electromagnetic fields inside the cable and reduce external interference entering sensitive conductors.

In practical equipment wiring, the cable shield should be terminated according to the controller, VFD, motor or machine manufacturer's grounding and EMC instructions. The shield is used for interference control and should not be treated as a replacement for a required protective-earth conductor.

Application of Double Shielded Wire

Transformer	Electronic Instrument
Electrical Appliance	Motor

This 20 AWG 4 conductor electrical double shielded wire is widely used in electronic instruments and devices, electrical appliances, transformers, motors and CNC systems. It is also suitable for computer communication systems, panel wiring, power-limited control circuits, intercom systems, security systems, audio and background-music wiring, remote-control circuits, lighting control, low-voltage equipment wiring, motor auxiliary control and four-wire signal connections where a 20 AWG shielded cable is required.

Whether the project is a CNC machine build, replacement cable, automation panel, controller I/O wiring, spindle control system, sensor signal wiring, audio control path, or compact electrical equipment assembly, Zhong Hua Jiang can help match the shielded wire configuration to the application. If the standard product does not meet the requirements, contact the sales team to discuss custom length and supply options.

Recommend Shielded Wire

Besides the 20 Gauge 4 Conductor 20/4 Flexible Electrical Double Shielded Wire UL2464, Zhong Hua Jiang offers other shielded cable options for diverse machine, control and signal-transmission requirements.

Electrical Chain Shielded Wire

Electrical Double Shielded Wire

Company Profile

Electrical Shielded Wire Manufacturer

How We Started

Huajiang was founded in 2000, initially producing CNC engraving spindle motors before expanding into variable-frequency drives, engraving machines, CNC accessories and electrical wire products. The Zhong Hua Jiang brand was established in 2018 to support broader international-market development.

What Makes Us Proud

The company has more than 20 years of manufacturing experience in CNC-related products and holds a registered design patent for an air-cooled spindle-motor series, patent No. 200730184245.5. Products have been supplied to customers in multiple international markets.

Why Choose Us

Quality Assurance Product inspection and quality-control procedures before shipment.	Patents and Certifications Long-term CNC manufacturing experience and patented spindle designs.	Additional Brand Value Integrated product support for CNC machines, spindles, accessories and wiring.
Reasonable Price Direct factory communication for specifications, quantities and custom lengths.	Full Time Service Technical support for cable gauge, conductor count and application selection.	Fast and Reliable Delivery Production coordination, shipment updates and export-order service.

Leading CNC Machine / CNC Spindle Motor Manufacturer Since 2000

Our Product Range

CNC Router Machines

CNC router models such as 3018, 3020, 3040 and 6090 are available for engraving, cutting, prototyping and small-production applications.

CNC Spindle Motors

Air-cooled and water-cooled spindle motors are supplied for different power, speed, cooling and machine-integration requirements.

CNC Accessories

The accessory range includes limit switches, Z probes, emergency-stop buttons and other components used to improve CNC-machine control, safety and setup accuracy.

Electrical Wires

Double-shielded cables and shielded chain cables are available in different gauges and conductor counts for CNC, VFD, motor, automation and electronic-equipment wiring.

Stepper Motors

Stepper motors are supplied for controlled motion in CNC machines, automation systems and related positioning applications.

Product Certification

Certification and compliance requirements can vary by market, machine and end use. Request the current product documentation needed for your order and verify that the selected cable satisfies the electrical, fire-performance and regulatory requirements of the final installation.

Customer Feedback

FAQ

What is 20 AWG 4 conductor electrical double shielded wire used for?

It is used for four-core low-voltage signal, control, instrumentation and equipment wiring where EMI reduction is important. Typical applications include CNC controller wiring, stepper/servo auxiliary wiring, electronic instruments, transformers, power-limited control systems, security wiring, lighting control, audio/control signal paths and monitoring circuits.

What does 20/4 shielded cable mean?

“20/4” means the cable contains four insulated 20 AWG conductors. In this product, the four conductors are twisted and protected by aluminum and tinned-copper shielding layers inside an overall PVC jacket.

What are the voltage, temperature and dielectric-test ratings?

The listed rated voltage is 300V, the listed rated temperature is 80°C / 176°F and the listed dielectric test is 2000V AC/min. Final suitability depends on circuit design, voltage drop, signal type, load type, installation environment and applicable standards.

How does double shielding improve EMI resistance?

The aluminum foil and tinned-copper shielding layers form conductive barriers around the insulated conductors. When terminated correctly, these layers help reduce interference from motors, VFDs, switching power supplies and other noise sources, improving stability in sensitive control or signal wiring.

Should the cable shield be grounded at one end or both ends?

Shield termination depends on the equipment, frequency range, enclosure bonding and EMC design. Follow the CNC controller, VFD, motor or equipment manufacturer's wiring instructions. The cable shield should not replace a required protective-earth conductor.

What is the difference between 20/4 and 20/3 shielded wire?

Both products use 20 AWG conductors, but 20/4 provides four insulated cores while 20/3 provides three insulated cores. Choose 20/4 when the circuit needs an additional conductor for common, feedback, signal reference, control return, four-wire sensor wiring or multi-signal equipment connections.

Is 20 AWG 4 core shielded wire suitable for motor or VFD wiring?

It can be used for suitable motor auxiliary, feedback, brake, sensor or low-voltage control circuits when the electrical requirements match the cable rating. For main motor power, VFD output power or safety-critical wiring, confirm cable type, insulation rating, shielding method and applicable standards before use.

Is this cable suitable for drag-chain or continuous-motion use?

Standard flexible shielded cable may be suitable for fixed or occasional-flex installations. Continuous high-cycle motion generally requires a cable specifically designed for drag chains. Provide bend radius, travel distance, speed and cycle frequency so the proper cable type can be confirmed.

Can the length and packaging be customized?

Yes. Buyers can provide the required roll length, total quantity, packing preference, labeling needs, application and destination market for quotation confirmation.

What information should I provide when requesting a quote?

Provide the cable gauge, conductor count, required length, estimated quantity, voltage, signal type, equipment model, installation movement, conductor-color requirement, termination method and delivery destination. These details help confirm the right cable and produce an accurate quotation.

How does Zhong Hua Jiang control product quality?

Product categories undergo quality-control checks before leaving the factory, and shipment inspection is performed before dispatch. Buyers should request the current specification sheet, certification documentation and inspection requirements needed for their application.

Contact Zhong Hua Jiang for Pricing and Custom Lengths