The notes will specify the style and type of recessed light fixture including the trim. The exact style of pull chain lamp socket is usually left to the discretion of the electrical contractor. The symbol only tells the electrician that he must install a ceiling, light fixture, electrical box in that location. The symbol does not indicate the type of fixture. The symbol only tells the electrician that he must install a wall electrical box for a light fixture in that location.
Table 1 presents the most common electrical symbols used in house construction. It is key, to the complete understanding of the plans and drawings that the notes are read in conjunction with reviewing them.
It should be noted that the notes on architectural plans are as important as the symbols. Electrical Symbols For Building Plans For A House - Part 2 Part 1