Ans. The outlets should be marked on the ceilings and walls with a pencil cross at the spot, marking also the location of switches, etc.
Ques. If an outlet is to be placed at the center of a room, how is the center of the ceiling located?
Ans. It is first located on the floor, then transferred to the ceiling by means of a plumb bob.
Ques. What is the first operation in making a ceiling outlet?
Ans. A small hole is bored through the ceiling and the bit pushed up till it comes in contact with the flooring of the room above, this flooring is also bored, as in [fig. 1,001].
Fig. 1,003.—View of completed pocket and ceiling outlet showing method of bringing out the wires.
A long bit about ¼ inch in diameter and about 18 inches long is used. The hole bored in the floor above will show where to take up the board to install the wires.
Ques. How is a pocket opened above the hole bored for ceiling outlet?