All nonlocking 15A and 20A, 125V and 250V receptacles in a damp location must be listed as weather resistant [406.9(A)] (see Figure). Damp locations include locations protected from weather and not ...

The requirements of Art. 404 apply to switches of all types, including snap (toggle) switches, dimmer switches, fan switches, knife switches, circuit breakers used as switches, and automatic switches, ...

But besides the usual wall receptacle you'll see in your home and ... either be a 20A 125V variant (known as NEMA 5-20R) or a 20A 250V one (also called NEMA 6-20R). You'll know which is which ...