An electrical engineer needs a reliable method to calculate phase currents for a balanced three-phase resistive load with single-phase heaters connected line-to-line.

No dedicated tool exists for calculating per-phase full load amps from a known set of line-to-line connected resistive heaters; manual calculation or forum help is required.

Severity

2Mild

Willingness to Pay

none

Added

Jun 19, 2026

Workarounds Described

calculates manually or asks on forums like Reddit

Implied Software Gaps

A calculation tool specifically for line-to-line connected resistive loads to quickly and accurately compute per-phase currents

App Concept

PhaseCalc Pro

A web and mobile app that automates current calculation for three-phase resistive loads with line-to-line connected elements. Enter heater quantities and specs, and get per-phase amps, total power, and feeder sizing instantly. Saves time and reduces manual calculation errors.

Key Features

Input heater count, voltage, wattage, and connection scheme
Auto-balance across three phases
Output per-phase full load amps, total kW, and recommended feeder size
Export calculation report for documentation

Target Users: Electrical engineers, technicians, and maintenance personnel in industrial/manufacturing settings dealing with three-phase resistive heating equipment.

Revenue Model: Freemium: free for up to 5 heaters; $9.99/mo for unlimited use and export features; $99.99 one-time for desktop version.

Existing Solutions Mentioned

textbooksspreadsheetsonline forums

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