Search codes, view standards, track updates
Reference provides NEC compliance information. Search by market vertical, product number, or article number. Review from three perspectives. Identify and access data for electrical professionals.
Showing 1–20 of 1,000 ranked alternatives.
Alan Cave
Access code sections and requirements
Access NEC code sections for electrical installations. Search by topic or keyword. View diagrams and tables. Save and annotate code excerpts. Share references via email or messaging.
Webrich Software Limited
Study NEC codes and prepare for exams
Study for NEC certification exams with practice tests, code references, and updates on 2023 NEC Code and 2024 changes. Track progress, review key concepts, and prepare for exams including F16, F17, G17, T17, and residential tests.
Kevin Phillips
Verify wire and conduit sizes based
Single Line Diagram helps electrical professionals verify wire and conduit sizes based on load selections. It uses NEC standards to provide minimum requirements. Users can check sizing for designs or installations and validate against code.
Nilu Rathod
Practice exams and review materials
Prepare for the exam with practice tests covering electrical theory, NEC, and local codes. Answer multiple-choice questions, review explanations, and track progress. Access study materials and simulate exam conditions for effective preparation.
Bonbon Electric 2021
Ask questions, get answers instantly
Access code-accurate answers for electrical tasks. Ask questions about wiring, safety, and code compliance. Get instant guidance on job site issues. View detailed explanations and solutions. Share information with team members.
Leviton Manufacturing Co. Inc.
Search products by specs or image
Identify Hospital & Industrial devices by specifications or visual configuration. Search for related products. Create and manage product lists. Access detailed information online.
Questar Corporation
Access gas data and use calculators
Provides data and calculators for plumbing and heating contractors installing gas-fired equipment. Includes local codes and regulations for Enbridge Energy service areas.
David Neel
Look up NEC codes and practices
Access NEC code and practices with AI-driven answers. Search for specific installations, check compliance, and receive expert advice. View detailed diagrams and compare code versions. Save notes and organize queries for easy reference.
John Stacy
Calculate service demand loads accurately
Calculate service demand loads compliant with NEC 220.42–220.82. Use Standard or Optional methods. Add dryers, ranges, fixed appliances, HVAC, and motors. Automatically determine largest heat or cool load.
Melchisedec Martinez Rodriguez
Calculate wire size and NEC® standards
Perform electrical calculations including wire size, voltage drop, and conduit sizing. Customize material and temperature settings. Access NEC® 2023 tables, FAQs, and searchable articles. Calculate ampacity and use Ohm's Law.
Southwire Company
Calculate wire pull characteristics and generate NEC®
The includes multiple calculators for electrical wire pull calculations. Users can input parameters for voltage drop, ground wire sizing, ampacity adjustments, and phase wire attributes. Results are generated according to NEC® standards.
Southwire Company
Calculate size and percentage
Calculate percentage and jam probability based on NEC standards. Input type, size, and conductor details. View percentages and determine appropriate sizes for electrical installations.
Sam Virgillo
Calculate voltage, current, and power
Calculate voltage, current, and power in 3-phase delta and wye circuits. Determine conductor ampacity using NEC and CEC tables. Compute voltage drop based on length, size, current, and temperature.
Appnest Technologies LLC
Receive SMS codes without sharing your number
Receive SMS codes using a virtual number. Enter a country and service to generate a number, copy it, and verify accounts without sharing your real number.
Southwire Company
Calculate wire size and install length
Calculates required wire size or install length for installations based on NEC® guidelines. Input system parameters to determine appropriate specifications. Provides detailed installation recommendations.
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