Home Electrical Load, Backup & Inverter Calculator
Calculate total connected wattage, simultaneous peak demand (coincidence factor), monthly kWh consumption, and recommended Inverter/UPS (VA) and battery (Ah) storage capacity.
Energy-saving warm or cool white household LED bulb.
4-foot linear LED batten for kitchens, living rooms, and garages.
Exterior driveway, yard, or terrace security flood.
Modern brushless high-efficiency ceiling fan.
Conventional inductive induction motor ceiling fan.
Evaporative water air cooler with fan and submersible pump.
Bedroom split air conditioner with variable speed compressor.
Master bedroom or living room split AC unit.
Winter convection, radiant, or oil-filled room heater.
Direct-cool 190L–220L refrigerator (comp. duty cycle ~50%).
260L–450L frost-free refrigerator with inverter compressor.
Food reheating and convection cooking appliance.
Food preparation grinder and food processor motor.
Drinking water filtration booster pump and UV lamp.
Electric magnetic induction stove top.
Standard household smart LED television.
Large living room home theater display.
High-speed broadband Wi-Fi router (running 24/7).
Office or home study laptop workstation.
Tower CPU with 24"-27" LED monitor and peripherals.
High-performance video gaming console.
Front or top load laundry washing machine.
Overhead tank fresh water lifting monoblock pump.
Bathroom electric shower water immersion geyser.
Heavy domestic steam clothes press.
Electrical Load & Backup Sizing Analysis
Inverter & Backup Outage Settings
Photometric & Electrical Engineering Standards
Based on international electrical codes (IEC 60364, NEC) and inverter sizing engineering methodologies used by leading energy providers (Endesa, Luminous, Livguard).
Inverters are rated in Volt-Amperes (VA). Sizing divides running watts by an inductive power factor (PF = 0.8) and adds a 25% surge safety margin to accommodate inductive inrush currents from refrigerator compressors and fan motors.
Determines backup duration during an electrical power cut. Accounts for 85% inverter conversion efficiency and protects deep-cycle tubular/lead batteries by capping depth of discharge (DoD) to 80% to maximize cycle life.
As standard in Endesa and international utility guidelines, rarely do all home appliances draw power simultaneously. The coincidence factor downscales raw connected load to establish the true contracted electrical power (kW) preventing tripped main breakers.