How to Build a Rv Power Converter

interface RVAppliance {
  name: string;
  runningWatts: number;
  startupWatts: number; // surge on startup, especially AC and fridge
  is240V?: boolean;      // few RV appliances use 240V, but some do
  }

  const COMMON_RV_APPLIANCES: RVAppliance[] = [
  { name: "Roof AC (13,500 BTU)", runningWatts: 1500, startupWatts: 3000 },
  { name: "Roof AC (15,000 BTU)", runningWatts: 1800, startupWatts: 3500 },
  { name: "Residential Fridge", runningWatts: 150, startupWatts: 600 },
  { name: "RV Absorption Fridge", runningWatts: 300, startupWatts: 300 },
  { name: "Microwave (1000W)", runningWatts: 1000, startupWatts: 1500 },
  { name: "Electric Water Heater", runningWatts: 1440, startupWatts: 1440 },
  { name: "Hair Dryer", runningWatts: 1500, startupWatts: 1500 },
  { name: "Space Heater", runningWatts: 1500, startupWatts: 1500 },
  { name: "TV (LED 40in)", runningWatts: 80, startupWatts: 80 },
  { name: "Laptop Charger", runningWatts: 65, startupWatts: 65 },
  { name: "Coffee Maker", runningWatts: 900, startupWatts: 900 },
  { name: "Toaster", runningWatts: 850, startupWatts: 850 },
  { name: "Converter/Charger", runningWatts: 600, startupWatts: 600 },
  ];

  type ServiceType = "30A" | "50A";

  interface LoadAnalysis {
  serviceType: ServiceType;
  maxWatts: number;
  safeWatts: number;       // 80% rule
  totalRunning: number;
  peakStartup: number;
  headroom: number;
  overloaded: boolean;
  suggestions: string[];
  }

  function analyzeLoad(appliances: RVAppliance[], service: ServiceType): LoadAnalysis {
  const maxWatts = service === "30A" ? 3600 : 12000;
  const safeWatts = maxWatts * 0.8;
  const totalRunning = appliances.reduce((sum, a) => sum + a.runningWatts, 0);

  // Peak startup: running load + largest single startup surge
  const largestSurge = Math.max(...appliances.map(a => a.startupWatts - a.runningWatts));
  const peakStartup = totalRunning + largestSurge;

  const headroom = safeWatts - totalRunning;
  const overloaded = totalRunning > safeWatts;

  const suggestions: string[] = [];
  if (overloaded) {
    suggestions.push(`You are ${totalRunning - safeWatts}W over the safe limit. Remove some appliances.`);
    if (service === "30A") {
      suggestions.push("Consider upgrading to a 50A hookup if available.");
    }
  }
  if (peakStartup > maxWatts) {
    suggestions.push("Startup surge may trip the breaker. Stagger AC startup with a soft-start kit.");
  }

  return { serviceType: service, maxWatts, safeWatts, totalRunning, peakStartup, headroom, overloaded, suggestions };
  }

  function calculateGeneratorSize(appliances: RVAppliance[]): number {
  const totalRunning = appliances.reduce((sum, a) => sum + a.runningWatts, 0);
  const largestStartup = Math.max(...appliances.map(a => a.startupWatts));
  // Generator must handle running load + largest single startup
  return totalRunning + (largestStartup - Math.min(...appliances.map(a => a.runningWatts))) + 500; // 500W buffer
  }