Welcome to NEC Design Software
- Accurate
- Easy to use
- Affordable
- Free unlimited tech support
- Compliance with NEC requirements
NEC Electrical Design Software
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Electrc 2005 and Loadcalc 2008 are copyright by Robert J La Capra. All rights reserved.
NEC® and National Electrical Code® are registered trade marks of the National Fire Protection Association (NFPA).
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Electrc and Loadcalc are designed to perform basic electrical
design calculations that comply with the National Electrical Code.
They are easy to use, accurate, and affordably priced.
We provide unlimited free technical support to our licensed users.
Our users have guided the development process from the
beginning. We encourage your input, critiques, and suggestions.
Feel free to contact us with any questions that you may have.


What's New
Electrc 2008 NEC Calculator
2008 NEC support and additional new features included.
- Many additional built-in conductor types
- Derating for additional current carrying conductors
- New rooftop raceway installation requirements
- Additional voltage drop calculations
- New quick-calculators
Minimum System Requirements:
- Windows 98 or higher
- Microsoft .Net Framework 2.0 or higher *
- 2 mb free disk space (if the .Net Framework is already installed)
- 85 mb free disk space (if the .Net Framework must be installed)
- 2 mb free memory
- Mouse or other pointing device
- 800 x 600 or higher screen resolution
(1024 x 768 or higher is recommended)
Electrc 2008 Trial Version is available in 2 download types:
If your system already has the Microsoft .Net Framework 2.0 or higher:
Download Electrc 2008 Without Framework ( less than 1 Mb file size )
If your system does not already have the Microsoft .Net Framework 2.0 or
higher, or if you are not sure:
Download Electrc 2008 With Framework ( 24 Mb file size )
* The Electrc 2008 setup will check your system for the presence of
the .Net Framework 2.0 or higher. If it is not found, you will be
asked if you wish to install it.
Current licensed users of any previous version of Electrc can upgrade
at the special upgrade price. Download the Upgrade Order Form, or
see the Pricing/Ordering page to order online.