Electrical

Estimate RV solar array watts, panel count, and battery-bank amp-hours from daily energy use, sun hours, and backup days.

Estimate subpanel feeder breaker size, panel rating, spare room, and optional main service headroom from planned loads.

Estimate residential panel load, spare amps, and the largest added running load that may fit using a NEC-style dwelling method.

Estimate motor running amps from HP, voltage, efficiency, and power factor for DC, single-phase AC, or three-phase AC motors.

Estimate motor starting amps from FLA or NEMA code, with low, middle, high range and optional current limit check.

Estimate motor full-load amps from hp or kW, voltage, phase, efficiency, and power factor, with optional nameplate comparison.

Estimate dehumidifier electricity cost from watts, hours per day, days used, $ per kWh, cycling, standby watts, and season length.

Estimate electric dryer cost per load, month, and year from watts, kWh per load, or a yearly energy label.

Estimate fridge electricity cost from EnergyGuide kWh, a meter reading, or average watts, with optional replacement savings.

Estimate pool pump electricity cost from watts, run time, electric rate, and run days, with an optional second speed setting.