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ElectriCalc Pro Electrical Calculator - NEC Calculator

ElectriCalc Pro
NEC Calculator
Electrical Calculator

w/ FREE Armadillo Case!!

$74.95 $99.95

NEC Upgrade Kit
for ElectriCalc Pro
Upgrade your older
(model 5070)
 ElectriCalc Pro
to the 2023 NEC!
(+ 2020 - 1996 NEC)


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ElectriCalc Pro
Electrical Calculator


National Electrical Code (NEC) Calculator
For Electrical Contractors, Designers, Electricians & Engineers

** Now Updated to 2023 NEC **

ElectriCalc Pro with FREE Armadillo Case - click for larger photoCompliant with 2023, 2020, 2017, 2014, 2011, 2008, 2005, 2002, 1999, 1996 NEC® and updateable for future code revisions.

Complete wire sizing, integrated voltage drops solutions and conduit sizing solutions: finds motor full-loads, computes fuse and breaker sizes and size overload protection.

Electrical Contractors, Designers, Electricians and Lighting Specialists solve tough electrical calculations in seconds and deliver those solutions in conformance with the latest NEC®. 

Saves time, reduces material cost and eliminates code violations on electrical design, estimating and construction jobs. The ElectriCalc® Pro is a complete electrical reference tool that will save time, trouble and money. 

Update to future NEC® updates with an easy-to-install kit. Includes FREE Armadillo Gear™ protective Hard Case.


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It helps you solve for:Easily Calculate Wire Size, Voltage Drop and More!

  • Wire Sizes
  • Integrated Voltage Drop
  • Conduit Sizing
  • Motor Full-Load Amps
  • Fuse and Breaker Sizes
  • NEC® Table Number displayed when performing Wire Size calculations
  • Service and Equipment Grounding Conductor Sizes
  • Enter BTU to find Kilowatts per Hour
  • Enter Kilowatts per Hour to find BTU
    Parallel Resistance
  • Ohm’s Law Calculations – enter any two values to solve for the third
  • Circular MILS wire sizes

ElectriCalc Pro Features:

  • Solve Electrical Math Problems (e.g., Volts, Amps, Volt-Amps, Watts, kVA, kW, PF%)
  • Average Voltage Drop Calculations
  • Copper or Aluminum Wire Sizes
  • Figure Parallel and Derated Wire Sizes
  • Grounding Conductor Sizes
  • Motor Full-Load Amps
  • Overload Protection Sizes
  • NEMA Starter Sizes
  • Conduit Sizes
  • Works as a Regular Calculator
  • Durable and Portable

The ElectriCalc Pro Electrical Calculator helps you:

  • Solve Electrical Problems Instantly
  • Carry NEC References with You
  • Save Time, Improve Productivity
  • Cut Costs & Errors
  • Improve Safety

The ElectriCalc Pro is an invaluable calculator for today's busy electrical professional. It's a complete NEC Reference Tool that puts electrical/wiring answers at your fingertips! And, it's updateable for future NEC revisions!

Unlike a regular calculator, the ElectriCalc Pro has intuitively labeled "electrical keys" and conforms to the National Electrical Code, allowing you to solve Code-related problems quickly and accurately. Common NEC tables are built in, providing instant solutions for the following:

  • Solve Electrical Math Problems Instantly
    Solve for volts, amps, volt-amps, watts, kVA, kW, PF%, EFF%, and DC resistance.
  • Copper or Aluminum Wire Sizes
    Calculates wire sizes per NEC 310-16 & 310-17. Copper or aluminum, 30/10, 60°C, 75°C, 90°C insulation ratings at 100% or 125% of ampacity. Adjusts wire sizes for ambient temperatures other than 30°C and for more than three wires in a raceway.
  • Parallel & Derated Wire Sizes
    One-button parallel & derated wire sizing.
  • Voltage Drop Calculations
    It's a Voltage Drop Calculator - Lets you find: minimum voltage drop wire size, max. length for any given wire size and drop percentage, actual number and percentage of volts dropped.
  • Grounding Conductor Sizes
    Calculates service and equipment grounding conductor sizes per NEC Tables 250-66 & 250-122.
  • Find Motor Full-Load Amps per NEC
    Works in 1Ø and 3Ø with the new expanded tables for 3Ø induction (to 500 HP) and synchronous (to 200 HP) motors per NEC 430-148 and 430-150.
  • Computes Fuse & Breaker Sizes per NEC 430-152
    Built-in solutions for: single and dual element fuses, instantaneous trip breakers and inverse time breakers.
  • Sizes Overload Protection per NEC 430-32
  • Automatically Finds NEMA Starter Sizes
  • Conduit Sizing for 12 Types of Conduit!
    Per NEC Tables 1, 3, 4, and 5 of Chapter 9, allows sizing of all common conduits for any combination of #THW, #XHHW and #THHN Wires. Plus, gives fill percentages, cross-sectional areas, remaining areas and more.
  • Works as a Regular Calculator
  • Durable and Portable


  • Free Armadillo Gear protective case
  • Battery saving Auto Shut-Off
  • Easy-To-Follow User's Guide
  • Long-life Battery (1CR-2032)
  • Full 1-year Warranty

ElectriCalc Pro Specifications:

  • Size:
    5.5 x 3.0 x 0.5" (140 x 76 x 13 mm)
  • Product Weight (product only with battery):
    3.2 oz. (91 g)
  • Power:
    3-volt lithium (CR-2032) battery (included)
  • Bat. Life:
    Approx. 800 hours usage
  • Auto Shut-off:
    8-12 min.
  • Keypad:
    42 keys; soft-touch silicone rubber
  • User's Guide:
    62 pp.; 5.0 x 2.5" (127 x 64 mm).
  • Warranty:
    1-Year Limited Warranty
  • Case:
    FREE Hard Cover/Case
  • Operating Temperature:
    32-130 deg. F (0-55 deg. C)
  • Display Type:
    LCD segment; 8 digits, with annunciator-legends
  • Display Dimensions:
    0.86 x 2.5" (22 x 64 mm)
  • Accuracy:
    10 digit internal accuracy

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