Park Model RV (ANSI A119.5) & 400 Sq.Ft. Modular Cottage 50A Solar Blueprint
Seasonal and full-time Park Model RV resorts in Arizona, Florida, Texas, and California often bill sub-metered electricity at 25¢ to 42¢/kWh. Here is how to fit 3.6 kW of rooftop solar and a 14.3 kWh battery onto a 400 sq.ft. Park Model cottage.
1. Structural & Electrical Engineering Specifications
- 1Why Sub-Metered RV Resort Electricity Is So Expensive: Even when local utility power is 14¢/kWh, private RV and Park Model resorts often add transformer, pedestal maintenance, and tier markups—charging long-term residents $250 to $450/month during summer A/C season.
- 2400 Sq.Ft. Roof Layout (36ft x 11ft Footprint): Removing the obsolete TV antenna and grouping plumbing vents lets a 36-foot Park Model roof accommodate 8 to 10 full-size 400W panels (3.2 kW to 4.0 kW)—producing 16 to 22 kWh/day in sunbelt resorts!
- 3Zero-Export Pedestal Mode (Park Management Friendly!): Many private Park Model resorts do not allow backfeeding solar power into the resort’s internal 50A pedestal transformer grid. By setting your EG4 6000XP or 18kPV to "Zero-Export to CT / Pedestal Input Only," your solar + battery powers 100% of your Park Model internally without ever sending 1 Watt backward into the resort’s meter!
2. Step-by-Step Racking & 48V Wiring Topology
Park Model Roof (8x–10x 400W All-Black Panels on QuickMount PV Shingle Flashing or Metal Clamps) → Exterior Conduit down Rear Utility Wall.
Under-Deck / Skirting Ventilated Locker or Exterior Wall → 48V Split-Phase Inverter + 14.3 kWh Weatherproof LiFePO4 Battery.
Inverter 50A AC Input ← Resort 50A Pedestal Cord (Zero-Export Mode); Inverter 50A AC Output → Park Model Main 50A Breaker Panel.
3. Direct-Wholesale Bill of Materials (BOM)
| Hardware Component | Engineering Specification | Est. Wholesale | Direct Source |
|---|---|---|---|
| EG4 6000XP Split-Phase 50A Inverter + 14.3kWh PowerPro Outdoor Battery | 100% Zero-Export to Resort Pedestal, True 50A 120V/240V Output | $4,698 | Check Price → |
| 3,600W Park Model Roof Solar Array (9x 400W All-Black Modules) | Generates 18–22 kWh/day in AZ / FL / TX Resort Sun | $2,180 | Check Price → |
| EcoFlow Delta Pro Ultra 50A Plug-In Park Model System | Plugs Directly Between 50A Resort Pedestal & Park Model Cord! | $4,999 | Check Price → |
Tiny Home & ADU Solar Engineering FAQ
Can my RV resort or Park Model HOA ban me from plugging my 50A cord into a battery inverter?
When using a plug-and-play inline 50A system (or Zero-Export subpanel) that never backfeeds the resort’s electrical grid and adheres to state Solar Access Rights statutes (in CA, AZ, FL, TX, CO), your system operates purely as an internal load reducer.
Will a 3.6 kW solar array + 14.3 kWh battery run a Park Model’s central ducted air conditioner?
Yes! Adding a Micro-Air EasyStart to the Park Model’s 2.5-ton or 3-ton packaged heat pump allows the 48V inverter and 14.3 kWh battery to run air conditioning day and night.