Want to take a lamp, put the chandelier unloaded, found three lines, how to pick up?
To see if there is a metal with the cover together, yes, the other two lines can be connected to the lamp.
To see if there is a line is connected with the shell metal, yes, do not control it (is a protective ground), the new lights connected to the other two lines can be, but a light, the original lights and new lights Are bright.
If the regular wiring, which has a two-color line is to protect the ground, that is, then the equipment shell, then a piece of the two-color line that is not used, if there are electricians around, it is best to ask people to help pick up, of,
