@smudges Only on specific circuits, it used to be just pools, then they added any outside outlets, then kitchens and bathrooms by the late 80s. Laundry rooms were not even required until 2017. Lighting, living rooms, dining rooms, bedrooms, and essentially almost everything else were not covered with some secondary protection until arc flash protection became code for most rooms in the mid-2000s. Any previous construction is exempt unless something needs replacing. That means most houses still have a large amount of breaker-only protection. My house was built in 1969–70. It only had breakers until I updated it. My parent’s house was built in 1981 and only had GFCI on the outside outlet. My previous house was built in the 90s and only had GFCI on the kitchen and bathroom outlets. Also, when people DIY here it’s like the wild west. It’s too easy to just go to Lowe’s, get the stuff and install it here under the radar. A lot of shoddy work out there.