50%

[Rodney B]

What is the 50% rule for renovation work and where is this stated in the code book?

 

[roger]

It would be a local building code, it is not an NEC issue.

Roger

 

[jumper]

Here is a place to start. Codes for Omaha, NE.

http://www.douglascounty-ne.gov/envservcms/services/permits-and-inspections/current-building-codes

 

[petersonra]

What is the 50% rule for renovation work and where is this stated in the code book?

Its not in the NEC.

It is often a rule of thumb.

Sometimes it is a local code amendment.

Most often it refers to remodeling of the entire structure as opposed to just work on an electrical system.