MasterCode NEC
NEC Answers for Electricians.
About
This app helps electricians quickly find answers to electrical code questions in the field. Describe your situation in plain English to get structured responses, including direct answers, relevant references, and practical interpretations.
What's New in MasterCode NEC
1.0.2
June 23, 2026
Bug fixes and stability improvements.
Subscriptions & In-App Purchases
MasterCode Pro
500 queries/month
FAQ
What is MasterCode NEC?
MasterCode NEC is an independent field-support and educational tool designed to help electrical professionals get oriented faster and understand the reasoning behind code answers. It provides structured responses to electrical code questions based on plain English descriptions of situations.
How does MasterCode NEC work?
You describe an electrical situation in plain English, and the app provides a structured answer. This includes a direct response, relevant NEC article references, reasoning, calculation notes, and practical field interpretations.
What types of electrical questions can MasterCode NEC answer?
The app can help with questions about wiring methods, GFCI and AFCI protection, conductor and breaker sizing, grounding, bonding, services, feeders, branch circuits, conduit fill, box fill, derating, motor calculations, residential requirements, and inspection issues.
Is MasterCode NEC the official NEC code book?
No, MasterCode NEC is not the official NEC. It does not replace the adopted code book and is not a substitute for licensed judgment, engineering documents, or manufacturer instructions.
What are the subscription plans for MasterCode NEC?
MasterCode NEC offers two subscription plans: MasterCode Basic at $9.99 per month and MasterCode Pro at $19.99 per month.
What devices does MasterCode NEC support?
MasterCode NEC is supported on iPhone and iPod devices.
How often is MasterCode NEC updated?
The latest version, 1.0.2, was released on June 23, 2026, indicating recent updates. The app was initially released on June 18, 2026.
What is the age rating for MasterCode NEC?
MasterCode NEC has an age rating of 4+, making it suitable for a wide range of users.
