Colored papers or ribbons should not be affixed to wires in celebrations or for the purpose of decoration, so as not to be a cause of fire from any sparks that occur or as a result of their contact with a hot lamp. The placement of piston boxes (fuses) and distribution panels must take into account that they are outside the rooms that contain fumes, dust, or inflammable materials or gases. A piston box (fuses) must be assigned to each group of connections and a knife to cut off the current in an emergency, and an automatic electrical breaker must be used to separate the electricity in the event of an electric arc.