Core Drilling Distance Recommendation or Requirements

[freddyt7]

All, if you need to core drill holes through a poured concrete wall what is the required, recommended, code distance required between holes? Does this vary for the size of hole you are drilling say 4" versus 2"? Does this vary on the type of wall; concrete block, brick, poured wall? Thank you so much.

 

[roger]

Not an NEC issue, it would be a structural concern and if it is a new building you can ask the architect or structural engineer.

Roger

 

[jim dungar]

There are many other codes, besides the NEC, that must be followed when making electrical installations. As Roger said, you need to contact someone familiar with 'building' codes.