How do your draw an 'electrical socket' and an 'electrical light switch' in an architectural floorplan?

Question

I understand that an electrical socket is shown by an 'x' or 'xx' for a double socket. For a lightswitch an 's' or 'ss' for a double. Can anyone confirm this?

Answer 1

We use a circle with two parallel lines for a standard 120V duplex 20A receptacle near the floor. "S" for a light switch, which may be followed by a lower-case letter to key it to the lights which it controls. Ultimate authority is the drawing legend, which may take exceptions to standard practice.