Raceway fill calculator (for 2011 NEC) , and much more all free

The Code Calculator suite runs by itslef on your computer, all others are web page JavaScript calculators. Over 20 calculators in all. It
took me two years programming time to write these starting in 1996.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.