Showing 1–20 of 1,000 ranked alternatives.
Informed Publishing
Access code tables and track updates
Access code updates for 2023 NEC and NEMA standards. View table changes, formulas, and conduit bending guides with video tutorials. Calculate ampacity and conduit fill. Include transformer data and wiring configurations.
PawEng, LLC
Access electrical codes and standards
Access electrical codes and standards for residential, commercial, and industrial applications. Search for wiring diagrams, safety protocols, and equipment specifications. View detailed explanations of electrical systems and components.
Southwire Company
Calculate and wire size
Calculate for a specific conductor run or determine wire size based on and current carrying capacity. Limits wire size to and NEC ampacity. Supports AWG and KCMIL sizes only.
Mike Holt Enterprises Inc.
Size conductors, calculate voltage drop, select circuit
Provides conductor sizing calculations, circuit protection sizing, raceway sizing, and equipment grounding conductor sizing for heating and air-conditioning equipment.
Bret Hardman
Calculate bends with precision
Calculate bends with precise measurements based on shoe radius, bender dimensions, type, and diameter. Use the centerline radius algorithm for accurate results. Display and adjust bend angles for field testing and real-world application.
Cyberprodigy LLC
Wire diagrams, pinouts, calculate electricity
Access electrical wiring diagrams for switches, fans, and outlets. Calculate grounding conductor sizes. View diagrams for 3-way switches, 4-way switching, GFCI, and more. Includes NEC 2014 to NEC 2023 standards.
PawEng, LLC
Answer daily questions and track your progress
Test knowledge of codes with daily quiz questions. Answer individual questions or complete as many as possible in one session. Includes 366 basic electrician-written questions for apprentices, journeymen, and masters.
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.
Cyberprodigy LLC
Calculate bends, mark measurements, track progress
Calculate bends with step-by-step guidance for offset and rolling offset types. Input measurements to determine bend angles and lengths. Include diagrams for visual reference. Export bend data for use in installations.
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.
Calculated Industries, Inc.
Calculate and document electrical work safely
Perform electrical calculations for contractors, designers, and electricians. Calculate load, voltage drop, conduit fill, and panel sizing. Verify compliance with NEC® codes from 1996 to 2023. Store and retrieve past calculations.
Cox Communications, Inc.
View service details and manage your bill
View service details and manage bills by updating payment methods or making payments. Check data usage and receive outage alerts. Access support resources and contact agents for assistance.
Stephanie Buchanan
Learn transformer details and rigging techniques
Lineworkers can access detailed guides on transformers, rigging, and knots. The includes rope capacity charts and how-to visuals. Users can calculate load angle factors, gin loading, and guy formulas.
Mazda Motor Corporation
Register vehicles, book service, locate dealers, access
Register your Mazda vehicle to schedule service appointments and access owner’s manuals. Locate nearby dealers and view service history. Request roadside assistance and check for recalls. Access connected services for compatible vehicles.
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