- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
It doesn't.
It applies to using something that you know is the same but not listed as such in that application.
Can you use a Murray breaker in a Siemens panel, even though they are the same? No.
Can you treat the busbar in a 150A panel as if it's a 225A panel even though it's the same? No.
You can use a Murray breaker in a Siemens panel and vice versa. If you look at the sticker in a Murray panel it says to use Siemens breakers.