I would like to reserve/dedicate an entire slot in a single phase 120v sub-panel for lighting of a small storage area even though the total load is much less than than a standard 20amp breaker. What is the smallest breaker available and in what increments are breakers available? What is the proper breaker for say a 750kW lighting load (1.25 factor is already included for continuous use). By the way, if it matters, this panel is a sub-panel for a 3-phase 120/208 400amp panel.
Thanx in advance.