Electrical Pocket Assistant

Electrical Pocket Assistant brings electrical calculators, quick references, and wiring diagrams together for field-use and design work.

Calculate voltage drop, wire ampacity, conduit and box fill, motor loads, transformers, grounding and bonding sizing, and more. Save report-capable calculations locally, organize them into projects, and export PDFs showing inputs, steps, assumptions, references, and limitations.

Calculators - Voltage Drop - Feeder / Service - Available Fault Current - Motor Load - Transformer - Generator Rating - Conduit Fill - Wire Ampacity - Grounding / Bonding Sizing - Box Fill - Pull Box - Conduit Bend - Ohm's Law

Wiring diagrams - Single-Pole Switch - Three-Way Switches - Four-Way Switching - Standard Receptacle - Fully Switched Receptacle - Half-Switched Receptacle - GFCI — LINE Only - GFCI — LINE/LOAD

References and tools - Wire Reference - Raceway Reference - Breaker & Fuse Reference - NEMA Enclosure Reference - NEMA Receptacle Reference - Unit Converter

Saved projects stay on your device; no account is required. Review inputs, assumptions, applicable code edition, and manufacturer instructions before using a result. The app is an aid, not a substitute for qualified professional judgment or a complete code-compliance review.

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