Question

Interior stairways with at least ____ risers require wall switches at each floor level, unless the lights are continuously illuminated or automatically controlled

Answer 1

Interior stairways with at least 3 risers require wall switches at each floor level, unless the lights are continuously illuminated or automatically controlled.

Step-by-step explanation:

The correct answer is option 3 risers. According to the information provided, interior stairways with at least 3 risers require wall switches at each floor level, unless the lights are continuously illuminated or automatically controlled.

This requirement ensures that there is convenient access to control the stairway lighting, promoting safety and ease of use.

The correct answer is that interior stairways with at least four risers require wall switches at each floor level, unless the lights are continuously illuminated or automatically controlled.

The reference provided regarding Stairs I lighting and Stairs II lighting, which mentions I(F)= B6; Cable 3G1 Cu; P=120W, pertains to electrical specifications such as the current in amperes (I), the type of cable used, and the power wattage (P) but does not directly answer the question about the number of stair risers necessitating wall switches.

The lighting of stairways is crucial for safety to prevent accidents, and ensuring that there are switches at each floor level is a part of building codes and safety standards.