NEMA 5-15P to 4-Way NEMA 5-15R Splitter Extension Cord with Weatherproof Caps
Attached Weatherproof Caps: Each of the four NEMA 5-15R outlets is equipped with a tethered rubberized cover that seals the contacts when not in use. This protects the copper terminals from moisture, dirt, and debris, ensuring reliable connectivity in harsh outdoor or construction environments.
Heavy-Duty Molded Splitter Block: The central 4-way junction is injection-molded to fully encapsulate the wire branching point. This structural reinforcement absorbs multidirectional pulling tension, preventing internal conductor fracture during heavy field deployment and equipment relocation.
Grounded 3-Conductor Architecture: Built with line, neutral, and ground conductors to provide a fully compliant 125V AC earth-grounded connection. This ensures safe operation and fault protection for commercial power tools, outdoor AV equipment, and metal-chassis appliances.
OEM Customization Options: The main trunk length, individual branch lengths, wire gauge (such as 14AWG or 12AWG for high-draw aggregate loads), jacket material (SJTW/SOOW), and packaging can be fully customized by our factory to match your precise commercial procurement specifications.
- Product Description
NEMA 5-15P to 4-Way NEMA 5-15R Splitter Extension Cord with Weatherproof Caps
The NEMA 5-15P to 4-Way NEMA 5-15R Splitter Extension Cord is engineered to deliver centralized, multi-point power distribution for outdoor and demanding commercial environments. By splitting a single 125V AC source into four distinct branches—each protected by a tethered weatherproof cap—this cord eliminates the clutter and electrical hazards of using multiple standard extension cords. Manufactured with heavy-duty SJTW/SOOW jackets and a structurally reinforced 1-to-4 injection-molded junction, it maintains a strict 0.1% defect rate for professional AV, construction, and large-scale lighting applications.


Why Choose Our 4-Way Power Splitter Cord?
Standard single-outlet cords force users to daisy-chain connections or rely on fragile indoor power strips when multiple devices are deployed outdoors. This 4-way splitter provides a safer, star-topology distribution point built for the elements.
1-to-4 Splitter Block Streamlines Power Routing
The heavy-duty molded junction divides the main power trunk into four separate NEMA 5-15R branches. This allows installers to power four distinct devices—such as multiple stage monitors, outdoor spotlights, or job site tools—from a single wall outlet. The result is a highly organized job site with fewer tripping hazards and faster equipment teardown.
Weatherproof Outlet Caps Protect Unused Connections
Each of the four NEMA 5-15R female receptacles is fitted with a tethered rubberized cover. When an outlet is not actively powering a device, the cap physically seals the interface against water, dust, dirt, and sawdust. This prevents short circuits and reduces contact corrosion when operating in wet or dirty environments.
Heavy-Duty Jacket for Outdoor Durability
Constructed with SJTW or SOOW outer jackets, this power cable is formulated to resist UV degradation, severe abrasion, and moisture penetration. It remains flexible in freezing temperatures, ensuring that landscape installers and event crews can deploy and coil the cord easily regardless of the season.
Injection-Molded Strain Relief Absorbs Tension
The NEMA 5-15P input plug, the massive central 4-way splitter block, and all four receptacle ends feature deep, injection-molded strain reliefs. This design distributes pulling force caused by dragged equipment or suspended lighting, preventing the internal copper conductors from fracturing under heavy mechanical stress.
Complete Product Specifications
| Parameter | Specification |
|---|---|
| Product Name | NEMA 5-15P to 4-Way NEMA 5-15R Splitter Extension Cord |
| Input Plug | NEMA 5-15P Male Plug, 3-Prong Grounded |
| Output Receptacles | 4 x NEMA 5-15R Female Receptacles with Weatherproof Caps |
| Standard Classification | Multi-Outlet Power Distribution Cord / Outdoor 4-Way Splitter |
| Voltage Rating | 125V AC |
| Current Rating | Up to 15A total combined load, depending on wire gauge and configuration |
| Wire Gauge Options | 16AWG / 14AWG / 12AWG pure copper conductor options |
| Cable Jacket Options | SJTW / SOOW (Outdoor / Weather-Resistant) |
| Junction Structure | Heavy-duty molded 1-to-4 splitter block |
| Customization Options | Trunk length, branch length, AWG, jacket color, cable printing, packaging |
| Certification Options | [Certification Options] |
Buyer's Insight: Expanding to four outlets introduces a strict ampacity management requirement. A 4-way cord does not multiply the power source; the aggregate current draw of all four connected devices must not exceed the rating of the NEMA 5-15P plug and the selected wire gauge (e.g., 15A maximum on a 14AWG or 12AWG build). For bulk procurement intended for construction or heavy AV use, always specify 14AWG or 12AWG to prevent dangerous voltage drops.
Professional Applications You Can Trust
For outdoor holiday and landscape lighting, installers need to route power to multiple light strings or animated displays across a large yard. The 4-way splitter acts as a highly efficient central hub, while the weatherproof caps keep unused outlets safe from sudden rain and automated sprinklers.
On construction job sites, workers frequently need to plug in a circular saw, a battery charger, a work light, and a fan at the same location. This heavy-duty grounded splitter allows up to four tools to be powered safely without relying on fragile indoor power strips that short out in the dust.
For temporary event and stage setups, DJ equipment and AV gear require organized, multi-point power distribution. The molded 1-to-4 junction block withstands foot traffic and equipment roll-overs far better than standard multi-plug wall adapters.
Advanced Safety Features
This cord maintains a continuous earth ground from the NEMA 5-15P plug to all four NEMA 5-15R receptacles. Ground continuity is essential for the safe operation of tools and appliances with metal housings, ensuring fault currents are diverted to earth.
The weatherproof caps are designed to protect against rain, splashing, and dust when the outlet is not in use. However, the connection point between the plug and the receptacle is not submersible. The splitter junction and all live connections should be kept clear of standing water puddles.
We utilize exclusively pure copper conductors to ensure maximum conductivity, which minimizes voltage drop and heat generation even when running multiple high-draw devices simultaneously across the branches.
Manufacturing Excellence
With 17 years of OEM power cord manufacturing experience, our factory implements rigorous quality control for complex multi-branch cables. Every 4-way splitter cord undergoes 100% automated electrical testing, including polarity, ground continuity, and dielectric withstand (Hi-Pot) tests. Our precise injection molding process ensures the massive 4-way splitter block will not crack under heavy mechanical stress.
Frequently Asked Questions
Q: Are the outlet caps fully waterproof?
A: The tethered caps provide excellent weather resistance against rain, splashing, and dust when securely closed over unused outlets. They are not rated for total underwater submersion.
Q: Can I use all four outlets at the same time?
A: Yes, provided the total combined amperage of the four plugged-in devices does not exceed the maximum rating of the cord (typically 15A for a 14AWG or 12AWG cable on a 125V AC circuit).
Q: What wire gauge should I choose for outdoor power tools?
A: For heavy-duty power tools like circular saws or air compressors, we highly recommend 14AWG or 12AWG to prevent voltage drop and ensure the tools receive adequate power without overheating the cord.
Q: What information is needed for a quotation?
A: Please provide the main trunk length, the length of the four branches, required wire gauge (16/14/12AWG), jacket type (e.g., SJTW), target certification, order quantity, and any custom packaging requests.
Custom Solutions for Your Business
Length Customization: Specify the exact length of the main trunk (from the wall to the splitter block) and the lengths of the four individual branches to optimize reach and eliminate cable slack for your specific application.
Wire Gauge and Jacket Selection: Choose between 16AWG for lighter lighting loads, or 14AWG/12AWG for heavy machinery and AV racks. Select SJTW for general outdoor use or SOOW for maximum oil, chemical, and abrasion resistance.
Color and Branding Options: While black is standard, we can produce high-visibility colors (like Yellow, Orange, or Green) for construction sites. Custom molded logos on the splitter block and custom retail packaging are also available.
Low MOQ Sampling: We support flexible sample dispatch timelines, allowing your engineering team to verify the cord's 4-way load capacity and physical durability before committing to bulk production.
Contact Us
✔ OEM & ODM Support | ✔ 100% Factory Tested | ✔ Fast Sample Dispatch
Ready to discuss your NEMA 5-15P to 4-Way Splitter Extension Cord requirements? contact us at rhea@szkuncan.net for expert guidance and competitive pricing.



_1788417794876.webp)

