Do you need to calculate a box size given the wires that are going into the box? Construction Monkey has
the perfect calculator for you. Just answer the questions below and we will do the box fill calculations for you based on
Article 314.16 of the National Electrical Code.
No guarantees are made as to the accuracy of the calculation or compliance with
local codes. Verify all calculations with a professional engineer. If you
find an error, or have a suggestion, please send us an email