January 30, 2026
January 30, 2026
We're excited to announce Dakota - Code Calculator & Tools, a new app designed to make NEC calculations faster and easier whether you're on the jobsite or studying for your licensing exam.
Dakota handles the calculations electricians need every day: circuit sizing, voltage drop, conduit fill, motor calculations, transformers, dwelling loads, and more. Each calculation is based on 2023 NEC tables and includes the relevant code articles and a step-by-step walkthrough showing exactly how the answer was determined.
The app supports voice input, so you can run calculations without typing - essential when your hands are occupied or dirty on the jobsite. Describe what you need in plain language and get immediate, accurate results. You can also manually enter values or edit voice inputs if needed. Every calculation is saved to your history, making it easy to reference previous work or share results with your crew.
If you're studying for your journeyman or master exam, use Dakota to verify your practice question answers. The detailed walkthroughs help you understand the calculation process and build confidence with NEC tables before test day.
Once you're in the field, Dakota eliminates the need to carry heavy codebooks. Get the answers you need in seconds, with NEC references included so you can verify the source if required.
Circuit Calculations Size branch circuits and feeders based on amperage, circuit breaker size, or VA load. Get protection size, conductor size, equipment grounding conductor size, raceway size, and maximum circuit length in one calculation.
Voltage Drop Calculators Three tools for different scenarios: find the minimum conductor size for a given circuit length and load, determine maximum circuit distance for a specific conductor, or calculate the actual voltage drop percentage for an existing installation.
Motor Calculations Size motor circuits based on horsepower and voltage. Dakota determines breaker size, fuse size, conductor requirements, equipment grounding conductor sizing for both protection types, raceway size, and maximum circuit length using NEC Article 430 and related tables.
Cooling & Heat Pump Calculations Calculate circuit requirements using equipment nameplate data. Enter the minimum circuit ampacity and maximum overcurrent protection from your AC or heat pump nameplate to get conductor sizing, protection requirements, and installation specs.
Resistive Heating Calculations Size circuits for electric heating equipment using nameplate maximum protection and minimum circuit ampacity values. Results include protection size, conductor requirements, grounding, and raceway sizing per NEC Article 424.
Transformer Calculations Calculate primary and secondary requirements for single-phase and three-phase transformers. Enter transformer kVA or secondary amperage to get protection sizing, conductor requirements, equipment grounding or bonding jumper sizing, and raceway requirements for both primary and secondary sides.
Dwelling Load Calculations Determine service sizing for residential installations. Calculate demand loads based on square footage, laundry circuits, fixed appliances, electric ranges, dryers, HVAC equipment, EV charging, and other loads using NEC Article 220 demand factors.
Conduit Fill Find the minimum conduit size for any combination of conductors. Enter wire count, sizes, and insulation types along with conduit type, and Dakota calculates proper fill percentages per NEC Chapter 9.
All calculations reference 2023 NEC including Articles 210, 215, 220, 250, 310, 424, 430, 440, 450, and Chapter 9.
Dakota - Code Calculator & Tools is free to download on iOS and Android. Whether you're preparing for your exam or working as a licensed electrician, it's designed to give you fast, accurate results without the extra weight.
Download Dakota - Code Calculator & Tools today!
iOS: https://apps.apple.com/us/app/nec-code-calculator-by-dakota/id6756617002
Android: https://play.google.com/store/apps/details?id=com.bluecollar.code_calculator
Download now to access thousands of practice questions across electrical & plumbing for US and Canada
