Download Dakota today. Do load calculations, conduit sizing, and voltage drop calculations in seconds. Track your on-the-job tracking hours. Get daily flashcards to practice your NEC or trade knowledge.
Dakota Prep apps are used by over 20,000 students from over 80+ apprenticeship organizations & colleges
An app built for the jobsite. Electricians don't have time for complicated interfaces.
Just speak your calculation and get immediate answers.
Example prompts shown:
"What size conductor do I need for a 60 amp circuit?"
"Calculate voltage drop for 200 feet of 12 AWG copper at 120 volts"
"Size a circuit breaker for a 5 HP three-phase motor at 480 volts"
Circuit Calculations
Size conductors, breakers, and raceways for any branch circuit or feeder. Includes automatic voltage drop calculations and equipment grounding conductor sizing.
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Load Calculator
Complete dwelling unit load calculations following NEC Article 220. Size service conductors and calculate demand loads for residential installations.
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Conduit Fill
Determine minimum conduit size based on conductor count and type. Supports all common conductor insulations and raceway types per NEC Chapter 9.
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Transformer Calculator
Complete primary and secondary sizing for single-phase and three-phase transformers. Includes protection, conductors, bonding jumpers, and raceways.
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Motor Calculator
Get proper breaker and fuse sizing for single-phase and three-phase motors from 1/6 HP to 10 HP. Includes conductor sizing and both breaker and fuse options.
Try Motor Calculator ->
Voltage Drop
Three specialized calculators: find minimum conductor size for a given length, calculate maximum circuit length for a conductor size, or determine actual voltage drop percentage.
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Cooling & Heat Pump Calculator
Size circuits for air conditioning or heat pump equipment using nameplate MCA and MOCP values. Handles single-phase and three-phase systems.
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Resistive Heating Calculator
Calculate circuits for electric heating equipment including baseboard heaters and unit heaters, based on nameplate ratings. Handles single-phase and three-phase systems.
Try Resistive Heating Calculator ->
Get instant, code-compliant answers with voice commands—no typing, no dropdowns, no hassle.
