Let's talk about what AFCI Breakers are and why or when would you need to use them.
I'm in the process of wiring in all the new circuits in this casita build, we have 19 brand new circuits and over half of them will require a AFCI breaker instead of your "traditional" breakers you might be used to seeing....But why?

In short, the AFCI (ArcFault Circuit Interrupter) breakers you see that are a lot larger and sometimes have the while wire "pigtail" on the end are basically a breaker and a GFCI outlet in one. It's almost like a breaker in front of a breaker. A safety before the safety. I think the intention is to help isolate potential problems that may occur from getting further down the line in an electrical panel and ultimately preventing damage/fire or worse. So the breaker itself has a built in ArcFault interrupter before the actual breaker switch. It just seems to be the way things are done now. Its usually require by code with anything being built now, and if you pull permits or modify anything that may be originally installed...you may be required to update these breakers. Unfortunately it does cost a bit more. .... But hey, Safety First.

15amp AFCI (Pigtail) Square D
https://amzn.to/4aaeIwi

15amp AFCI (Pushon) Square D
https://amzn.to/4ashVHe

20amp AFCI (Pushon) Square D
https://amzn.to/4asi0L2

20amp AFCI (Pigtail) Square D
https://amzn.to/4amXY4Q

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