I. Core Working Principle

　　The 50A and 30A RV power supply systems have fundamental differences:

　　50A System: 4 prong interfaces (dual live wires + neutral wire + ground wire), 240V voltage, rated power 12000W, capable of driving high-power devices such as air conditioners and water heaters.

　　30A System: 3 prong interfaces (single live wire + neutral wire + ground wire), 120V voltage, rated power 3600W.

　　Conversion Logic: The splitter bridges the dual live wires of the 50A system, distributing the single 120V current of the 30A system to two outputs, while limiting the total power to ≤3750W (to avoid overload).

　　II. Key Characteristics of Heavy-Duty Splitter

　　Electrical Specifications

　　Wire Material: 100% pure copper (excellent conductivity), wire diameter ≥10AWG (heavy-duty standard, such as Parkworld using a 6AWG+8AWG combination)

　　Voltage/Power: Compatible 125/250V, rated power 3750W (dual 30A output) or 12500W (50A+30A combined output)

　　Interface standard: NEMA 14-50P (male) → TT-30R (female), compatible with mainstream RVs/generators

　　Durable design

　　Protection level: STW certified PVC sheath, resistant to UV, rain, snow, and high/low temperatures (-30℃ to 60℃)

　　Structural details: Ergonomic non-slip handle (for easy plugging and unplugging), electroplated copper terminals (anti-oxidation), illuminated indicator lights (visible on/off status)

　　Safety certifications: Must have UL/ETL certification (avoid purchasing products that are only "tested" but not "certified")

　　Some models have Fault Smart fault protection (such as Furrion), automatically detecting overload/short circuit

　　III. Recommended Popular Products

　　GEARit: Supports dual 30A output, uses 10AWG cable, equipped with bright green sheath (high visibility at night), and has passed... ETL certified, priced around $40, length 2-3ft.

　　RecPro: Model RP-4040, features dual 30A outputs, a compact design, and non-slip grips (for easy handling), priced at $31.95, 28-inch length.

　　Nilight: Dual 30A output, 10AWG cable, 2488 reviews with a 4.7-star rating, 2-year warranty, priced around $35, 2ft length.

　　Parkworld: Model 62800, 50A+30A dual output design, 6AWG main cable, UL certified, with indicator lights (clear on/off status), priced at $109.99, 3ft length.

　　Furrion: Model FP5230R-SB, a single-channel converter with a 5-year warranty, equipped with a 90° elbow (suitable for narrow spaces), priced at $90.95, 1ft in length.

　　IV. Selection and Usage Precautions

　　Selection Basis

　　Dual 30A Output: Suitable for simultaneously powering two 30A RVs (e.g., campsite scenarios)

　　50A+30A Combination: Select when you need to power both your own 50A RV and 30A equipment (e.g., generator)

　　Length Recommendation: 2-3ft preferred (too long can cause voltage drop, too short is inconvenient to operate)

　　Safe Operation

　　Regular Inspection: Check plugs for scorch marks and cables for damage (avoid loose connections and overheating)

　　Power Control: Total load ≤ 3750W when using dual 30A output (avoid running air conditioner + electric oven simultaneously)

　　Environmental Protection: Use a waterproof cover in rainy weather to avoid immersion in water

　　Avoidance Tips

　　Beware of "copper-clad aluminum" wire (poor conductivity and prone to overheating); look for the "100% pure copper" mark.

　　Reject uncertified products; UL/ETL marks must be clearly printed on the plug.

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