I. Recommended Core Waterproof and Sealed Products

　　Camco 55315 Waterproof Y-Type Splitter

　　Specifications: 3-foot 10AWG pure copper core, STW weather-resistant and oil-resistant sheath (1.2mm thickness)

　　Connection: NEMA 14-50P male connector → dual TT-30R female connectors, each end equipped with a screw-on waterproof cap

　　Waterproof Performance: IP67 sealed design, interface with built-in EPDM rubber sealing ring, can withstand short-term immersion (1 meter water depth for 30 minutes)

　　Safety Certification: ETL+CSA dual certification, built-in overheat protection (trigger temperature 130℃)

　　Camping Suitable: UV-resistant material can withstand sun exposure, wide operating temperature range of -40℃~90℃, suitable for RVs with external air conditioning + refrigerator dual loads

　　Price: $42.99 (including portable storage bag)

　　Marinco 3050W-B Sealed Splitter

　　Specifications: 3-foot 10/3 Cable Diameter, Dogbone Integrated Molded Shell

　　Interface: 50A Anti-Drop Male Connector → Dual 30A Locking Female Connector, Press to Unlock for Accidental Touch

　　Waterproof Performance: IP65 Fully Enclosed Sealing, Heat Shrink Waterproof Tubing + Encapsulation at Seams

　　Features: Power Indicator (Waterproof LED), Impact Resistant Shell (Withstands 1.5 Meter Drop)

　　Price: $59.99 (RV Accessory Supplier Exclusive)

　　1688 Camping Custom Waterproof Model

　　Specifications: 3-foot 8AWG Silicone Cable (100,000 Bending Cycles), Anderson SB50 Waterproof Connector

　　Waterproof Upgrade: IP68 Military Waterproof Standard, Connector with Pressure Balance Valve to Prevent Condensation

　　Advantages: Customizable Cable Length, Equipped with Stainless Steel Hook for Easy Campsite Hanging and Storage

　　Price: ¥168-220 (Includes Waterproof Test Report)

　　II. Key Technical Parameters (Focusing on Camping Scenarios)

　　Cable Diameter and Current Carrying Capacity: 3-foot length, 10AWG (6 8AWG (10 sq mm) can meet dual 30A short-time loads (total power ≤7500W@250V), and 8AWG (10 sq mm) supports continuous full-load operation (12500W@250V), both conforming to UL2459 outdoor cable standards; Waterproof rating analysis: IP67: Completely dustproof (no intrusion of wind and sand in campsites) + short-term water immersion protection (to cope with heavy rain and water accumulation), a basic essential level for camping; IP68: Can withstand long-term water immersion (1.5 meters deep), suitable for rainy areas or camping scenarios near water; Sealing structure must include: interface rubber sealing ring, integrated injection molding of cable and connector, and waterproof cap for unused female connectors for triple protection; Certification and materials: Must have ETL/CSA dual certification (mandatory requirement for campsite electrical equipment), STW weather-resistant rubber is preferred for the sheath (tear resistance is better than PVC), silicone wire is suitable for extremely cold regions (does not harden at -40℃); Temperature adaptability: Must cover extreme environments in campsites -30℃~85℃ (summer sun exposure). (During low winter temperatures), silicone wires exhibit more stable performance within this range.

　　III. Campsite Safety Usage Instructions

　　Waterproofing Maintenance Points:

　　Dry the connectors before plugging and unplugging. When not in use, always tighten the waterproof caps (apply silicone grease to enhance sealing).

　　Avoid cable crushing (campervans need elevated cabling for access). Regularly check the sheaths for cracks (especially at the connector base).

　　Load Management Principles: Do not connect dual 30A outputs to high-power devices simultaneously (e.g., air conditioner + oven). It is recommended to use a power monitor (e.g., Progressive Industries EMS).

　　Grounding and Lightning Protection: Choose a model with grounding detection (e.g., Camco 55315). Disconnect the splitter and store it in a dry place during thunderstorms.

　　Scenario Adaptability Tips:

　　For regular camping, choose IP67 (high cost-performance ratio). For rainy season/water camping, choose IP68.

　　For RVs that are frequently used, it is recommended to install a waterproof junction box (fixed near campsite stakes to prevent connectors from getting wet).

　　IV. Alternative Solutions and Emergency Measures

　　Shortage Alternative:

　　Progressive Industries 5030SW (18-inch short version, IP67, with fault alarm)

　　Basic Model + Waterproofing Retrofit: Wrap standard splitters with self-adhesive waterproof tape (e.g., 3M 55232), and cover the connectors with silicone waterproof bags.

　　Emergency Handling: If water gets into the cables, immediately disconnect the power supply. Dry the connectors with compressed air, and allow them to stand for 24 hours before reuse.

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