Installation requirements for NM (Romex) cable

[Sparky2220]

What Article number discusses the installation requirements for NM cable?

In a residential application (single family new construction) are two strands of NM cable allowed to enter the same opening in a 1900 box? See picture. This is happening at several locations and I want to make sure it is allowed.


Thanks!

 

[masterinbama]

The listing for the connector and box fill are all that apply here.

 

[augie47]

The listing for the connector and box fill are all that apply here.

agree and your Code reference would be 110.3(b)

 

[Dennis Alwon]

Most of those button connectors are listed for 2 cables.