Southwire® Voltage Drop Calc
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.
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Cable Size Calculators screenshots
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Wire Gauge Calculator.
V PUGAZHENTHI
Calculate based on voltage, current, distance,
Calculate based on voltage, current, distance, and voltage drop. Select units like AWG, mm, or inches. Choose material: copper, aluminum, or electrical steel. Ensure safe electrical installations for low voltage DC systems and residential AC wiring.
Electrical Code-A-Day
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.
Building Wire Selector
Southwire Company
Select size and type for installations
Determines minimum conductor size and recommends and cable types based on installation requirements. Follows National Electrical Code® standards. Calculates ampacity and voltage drop. Supports various wiring methods and conductor materials.
Ugly's Electrical References
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.
SLD Sizer for Engineering
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.
Electric Toolkit - Calculator
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.
2017 Master Electrician Ref.
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.
Electrical Calc Elite
Cyberprodigy LLC
Calculate loads and circuits
Calculate loads, voltage drops, and conductor sizes according to NEC codes. Verify compliance for residential and commercial projects. Access code references for 2002–2023 editions. Perform wire sizing, panel scheduling, and circuit calculations.
Pump Cable Calculator
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.
DC Wire Sizer
Dirty Dog Software, LLC
Size wires for DC voltage and current
Calculate size for DC voltage systems to prevent overheating and fires. Input parameters to determine appropriate gauge. Save, edit, sum, email, and export run data. Include a wizard for guided calculations.
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