1. 15 amp double pole.
2 It's ok to have breakers that add up to more than your main. I'd say most panels do. I wouldn't worry about it unless your main starts tripping a lot.
3 Use the same brand breaker as the panel.
2 It's ok to have breakers that add up to more than your main. I'd say most panels do. I wouldn't worry about it unless your main starts tripping a lot.
3 Use the same brand breaker as the panel.