Core Products & Expertise: EV Charging Solutions: J1772 Type 1 & Type 2 connectors, GB/T AC/DC charging cables, Electric Vehicle (EV) AC/DC charging connectors ("guns"),
and EV chargers.
Power Cords & Adapters: c(Ul)us-certified power cords, RV adapters, and various plugs/sockets.
Lighting Components: Temporary string lights and string light sockets/wiring.
Commitment to Excellence:
Professional R&D: Backed by a dedicated in-house R&D team driving innovation.
Robust Quality Assurance: Certified under ISO 9001 Quality Management System. Products hold key safety certifications, including c(Ul)us, ETL, and CE.
Advanced Manufacturing: Equipped with modern production facilities and stringent quality control processes.
Global Reach & Reputation:
Over the past decade, Zhenjia has achieved steady growth and earned recognition as a reputable enterprise within the industry. Our products are exported worldwide, with a
strong presence in demanding markets such as the United States.
Our Mission:
As China 3 Prong Dryer Cord Manufacturers and 4 Prong Dryer Cord Suppliers, we are committed to providing our global customers with reliable, safe, and high-performance products, supported by exceptional service. We strive to build lasting partnerships through continuous innovation and unwavering dedication to quality.
Looking Ahead:
Zhenjia Electric remains focused on advancing technology, enhancing manufacturing capabilities, and expanding our global footprint to meet the evolving needs of the market.














Ningbo Zhenjia Electric Appliances Co., Ltd. manufactures Dryer Cord assemblies for electric dryers, ranges and similar 240 V household appliances. Our range covers the two North American wiring conventions used in residential and light commercial installations: 3-wire NEMA 10-30P cords with eyelet terminations and 4-wire NEMA 14-30P cords with ring or fork terminations.
We build these cords in 10 AWG copper with molded or assembled plugs, and we supply them as part of a broader appliance and power cord programme that includes Range Cord assemblies and general Power cord products.
A dryer cord is a short, high-current appliance cord that connects a dryer or range to a wall receptacle. The electrical requirement is specific: the heating element runs on 240 V while the motor, timer, controls and drum light run on 120 V, so the cord must carry two live conductors, a neutral and, in modern installations, a separate equipment ground.
We produce the two configurations that cover the majority of North American dryer installations, and we supply them with the conductor count, plug type, length and termination that match the appliance and the receptacle already present on site.
| Configuration | Plug / Receptacle | Conductors | Termination | Typical Fit |
|---|---|---|---|---|
| 3-wire, 30 A | NEMA 10-30P | 3 × 10 AWG copper | Eyelet connectors | Older 3-slot dryer outlets |
| 4-wire, 30 A | NEMA 14-30P | 4 × 10 AWG copper | Ring / fork terminals | Newer 4-slot grounded outlets |
| Range cord, 40–50 A | NEMA 10-50P / 14-50P | 6–8 AWG copper | Ring / eyelet terminals | Electric ranges and ovens |
Our dryer cord range is organised around the plug standard and conductor count, because those two variables determine whether the cord will physically and electrically match the installation.
30 A, three-wire cord with 10 AWG copper conductors and eyelet connectors. Suited to existing 3-slot dryer receptacles where the neutral serves as the combined neutral and ground path.
Typical use: replacement cords, appliance service, property maintenance programmes.
30 A, four-wire heavy-duty cord with 10/4 gauge conductors, NEMA 14-30P plug and four-wire appliance cable. ETL listed, with a separate ground conductor for grounded installations.
Typical use: new installations, code-compliant upgrades, OEM appliance supply.
Conductor size drives current capacity and voltage drop. For 30 A dryer circuits, 10 AWG copper is the standard working size; range cords on 40–50 A circuits use 6–8 AWG. We compound our own PVC insulation and jacket material, which lets us control flexibility, temperature behaviour and surface finish rather than depending on outside supply.
Dryer cords sit on a dedicated 30 A branch circuit, so the specification set is narrow but unforgiving. We confirm the following points against the appliance nameplate and the site receptacle before releasing a build.
Our manufacturing base operates under the ISO 9001 Quality Management System, and every production stage is subject to defined inspection points. We hold our own testing laboratory and inspection equipment, so conductor resistance, continuity, polarity and insulation integrity are checked in-house rather than outsourced.
Products in this family are supported by c(UL)us, ETL and CE certification, and our certificate file includes Certificate of Compliance E529560, E325763 and E321611, Verification of Compliance records and Authorization To Mark. For a dryer cord project we supply the certificate reference that applies to the exact plug, gauge and construction being ordered, so the documentation matches the shipped article.
We develop and produce cords from customer drawings or physical samples. That covers non-standard lengths, alternative termination hardware, jacket colour and print, retail-ready packaging and private-label marking. Because we run our own granulation and processing plant, changes to compound hardness, colour or flexibility can be made without waiting on a third-party material supplier.
Our wider electrical connection programme includes Connector Type power cord assemblies and Extension Cord products, which allows a distributor to consolidate several appliance and power categories in one production programme.
A dryer cord is installed by removing the appliance terminal cover, routing the cord through the strain relief, and landing the conductors on the terminal block in the correct order. The cord must be long enough to reach the receptacle without tension and short enough to avoid coiling behind the appliance.
To prepare a dryer cord configuration and quotation, we work from the following project inputs. Where a detail is not yet fixed, we can propose the standard construction for the application and confirm it against the appliance nameplate.
| Project Input | What It Determines |
|---|---|
| Appliance type and nameplate rating | Current rating, conductor gauge and plug standard |
| Wall receptacle type | 3-wire NEMA 10-30P or 4-wire NEMA 14-30P |
| Required cord length | Cut length, copper weight and packaging size |
| Termination hardware | Eyelet, ring or fork connector and stud size |
| Destination market | Certification route, jacket print and marking |
| Packaging and channel | Retail pack, bulk carton and carton quantity |
| Annual or per-order volume | Production scheduling and material planning |
A 3 prong cord uses a NEMA 10-30P plug with three 10 AWG conductors, where the neutral also serves as the ground path. A 4 prong cord uses a NEMA 14-30P plug with four 10 AWG conductors, adding a separate equipment ground. The correct choice is determined by the wall receptacle, not by preference.
Yes. Our R&D team develops and produces cords from customer drawings or physical samples, including non-standard lengths, termination types, jacket colour and print, and private-label packaging.
Our products hold c(UL)us, ETL and CE certification, and our manufacturing operates under ISO 9001. Certificate of Compliance E529560, E325763 and E321611, along with Verification of Compliance and Authorization To Mark records, are available for the applicable construction.
We operate our own testing laboratory and inspection equipment. Conductor continuity, polarity, resistance and insulation integrity are checked as part of our in-process and final inspection routine before cartoning.
We need the appliance type and nameplate rating, the wall receptacle type, required cord length, termination hardware, destination market, packaging format and expected volume. With those inputs we can confirm the construction and prepare a quotation.
Yes. We manufacture dryer cords within a broader programme that includes US Power Cord products, extension cords, RV adaptors and generator power cords, so multiple categories can be consolidated into one production and shipment plan.