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ElectriCalc Pro
ElectriCalc Pro
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Model # 5070

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ElectriCalc Pro
Reviews (14)

Electrical Code Calculator
Compliant with 2017, 2014, 2011, 2008, 2005, 2002, 1999, 1996 NEC®

Click here for the 2017 NEC Upgrade Chip for existing 5070 models

Electrical contractors, electricians, air conditioning installers and lighting specialists solve tough electrical calculations in seconds and deliver those solutions conforming to the latest NEC.

Easily solve calculations in seconds, including wire and conduit sizes, integrated voltage drop, motor full-load amps, fuse and breaker sizes, parallel resistance and more.

The ElectriCalc Pro is a complete electrical reference tool that will save you time and money. Users can update to future NEC revisions with an easy-to-install kit. Includes Armadillo Gear protective case.

NEC 2017 Compliance Notice. The 2017 NEC Code has been examined and there is one change in the 2017 NEC Code that impacts the functionality of your ElectriCalc Pro Model 5070. Installing the new chip and setting the calculator to NEC 2017 will make it fully compliant to the new code.

NEC® and National Electrical Code® are registered trademarks for the National Fire Protection Association, Inc.; Quincy, MA 02269

It helps you:

  • Work directly in and convert between Amps, Watts, Volts, Volt-Amps, kVA, kW, PF% and EFF% and DC Resistance
  • Calculate wire sizes per NEC®; Copper or aluminum, 3Ø/1Ø, 60°C, 75°C, 90°C insulation ratings and 100% or 125% of ampacity. Adjust wire sizes for ambient temperatures other than 30°C and for more than three wires in a raceway
  • Integrated voltage drop solutions. Find minimum VD wire size, maximum Length for any given wire size, drop percentage, actual number and percentage of Volts dropped
  • Conduit sizing for 12 types of conduit. Find sizing of all common conduits for any combination for THW/THHW, XHH/XHHW and THHN/THWN wires. Plus, gives fill percentages, cross-sectional areas, remaining areas and more
  • Find Motor Full-Load Amps per Current NEC®. Works in 1Ø and 3Ø with the new expanded tables for 3Ø induction (to 500 hp) synchronous (to 200 hp) and DC motors per NEC®.
  • Calculates Fuse and Breaker Sizes. Solves fuse and breaker sizes per NEC®
  • Parallel and derated wire sizing
  • Parallel Resistance
  • NEC Table number Displays when performing Wire Sizes calculations
  • Sizes overload protection per NEC®
  • Automatically finds NEMA starter sizes
  • Calculates service and equipment grounding conductor sizes per NEC® plus works directly in electrical terms
  • Enter BTU to find Kilowatts per Hour
  • Enter Kilowatts per Hour to find BTU
  • Ohm's Law Calculations - enter any two values to solve for the third
  • Circular MILS wire sizes

Additional Features:

  • Works as standard math calculator with +, -, ×, ÷, +/-, %, π, 1/x, x2, and √
  • Auto Shut-Off
  • Update to future code revisions with easy-to-install kit


  • Long-life CR2016 battery
  • Easy-to-follow User's Guide
  • Handy Pocket Reference Guide
  • Rugged shock, dust and moisture-resistant Armadillo Gear protective case
Tech Specs

5.6" x 3.0" x 0.6" (142 mm x 76 mm x 16 mm)

Product Weight including Armadillo Gear protective case and Pocket Reference Guide: 7 oz. (200 grams)

One 3-volt CR-2016 long-life battery included

Display Type:
LCD segment; 8 digits

Display Dimensions:
0.625" x 2.5" (16 mm x 64 mm)

12 digit internal accuracy

Overall Rating Full StarFull StarFull StarFull StarFull Star
4.92 out of 5 14
User Reviews
Calculations 5 out of 5.0
User: , Owner of Stone Electric from Fresno, CA
User Rating: ★ ★ ★ ★ ★
This calculator helps me perform calculations faster which helps me get jobs done faster.

Great Product 5 out of 5.0
User: , Electrical Estimator of Peaden from Gulf Breeze FL
User Rating: ★ ★ ★ ★ ★
second one I have purchased & will buy again if need be.

electricalc pro 5 out of 5.0
User: , owner of York Valley Contracting from Eastern Arizona
User Rating: ★ ★ ★ ★ ★
It suits my needs perfectly. I am not an electrician but have to do some electrical work on occasion. the electricalc works out wire sizes and amps taking a lot of the headache and uncertainties out of the job

0 out of 5.0
User Rating:
I have an ElectricCalc '96, Yes '96 lol, after 17 years I think the heat from my toolbox in the sun has killed it. Wonderful, and very valuable product, And I would say absolutely bullet proof. Guess its time to replace. Thank you for a truly wonderful product.

5 out of 5.0
User: , Electrcian of Maron Electric from Illinois
User Rating: ★ ★ ★ ★ ★

I use this product! 5 out of 5.0
User: , Supervising Electrical Designer of Parsons - Brinckerhoff from San Francisco
User Rating: ★ ★ ★ ★ ★
I'm design lead on Bay bridge electrical, Oakland and Yerba Buena touchdowns. Specs use 2005 code!

Electricalc Pro 5 out of 5.0
User: from Bloomington, IL
User Rating: ★ ★ ★ ★ ★
Couldn't get by with out it!!

5 out of 5.0
User: from juliette, ga
User Rating: ★ ★ ★ ★ ★

Faster and Neater! 5 out of 5.0
User: of CHPA Consulting Engineers from Houston, TX
User Rating: ★ ★ ★ ★ ★
This calculator has replaced 8 tables from the NEC pinned up on my board. Not only fast, but it has uncluttered my ofice.

Report 5 out of 5.0
User: of Cayamas Electric Corp. from Miami, FL
User Rating: ★ ★ ★ ★ ★
I had an early model. It comes in very handy in calculating a lot of the electric wire, conduits etc.

5 out of 5.0
User: of Kirby Electric from Auburn,Wa.
User Rating: ★ ★ ★ ★ ★

ElectriCalc Pro 4 out of 5.0
User: from Stockton, CA
User Rating: ★ ★ ★ ★
The calculator is as good as the 1993 version I once had but the instructions to perform different functions are vague. Not always keystroke by keystroke.

ElectriCalc Pro 5 out of 5.0
User: of EJ Electrical Installation Co. from New York, NY
User Rating: ★ ★ ★ ★ ★
Easy to use and a real time saver when doing calculations for design and layout work in the construction field.

Learning the biggest cost 5 out of 5.0
User: of SEARK College from Pind Bluf, AR
User Rating: ★ ★ ★ ★ ★
This is an excellent tool IF you invest the time to become proficient with it. This time can be specific study or just a commitment to use it until you’re comfortable and competent with it. Otherwise you will, like I did the first time, end up with it just sitting in a drawer.

Armadillo Gear Soft Tool Belt Case - Orange and Black Armadillo Gear Soft Tool Belt Case - Orange and Black

Nylon Armadillo Gear® Tool Belt Case is large enough to hold both
$14.95 Armadillo Gear Soft Tool Belt Case - Orange and Black | Add to Cart
Armadillo Gear Soft Tool Belt Case - Lime Green Armadillo Gear Soft Tool Belt Case - Lime Green

High visibility green tool belt case large enough to hold and protect
$14.95 Armadillo Gear Soft Tool Belt Case - Lime Green | Add to Cart
CR2016 Battery CR2016 Battery

Calculator replacement battery.
$5.00 CR2016 Battery | Add to Cart

• User's Guide • Pocket Reference Guide
• Spec Sheet