0605 Stairway Lighting - Electrical Electricity - Lights Outlets Switches Junction Boxes -

Image Text: Stairway lighting requires switches at both the top and bottom of the stairs when the stairs have more than 3 treads (CANADA) or more than 6 treads (USA) > more than 3 treads (CANADA) > more than 6 treads (USA) > Note: in some areas, only one switch may be required for lights on stairs to an unfinished basement